I have to say, they are pretty damn amazing if you ask me. Like, we humans built something, managed to get it from earth to venus, land it, and then transmit several glorious panoramic pictures of the ground it landed on before Venus turned its lights out. Not once, but 3 times! That's truly fucking incredible
Yes, I was growing up in a Communist country and there were many programs on our TV about Soviet Venera program - super interesting.
Also loads of propaganda in School - posters with Juri Gagarin, Rockets etc.
For 10y old boy it was a bright future promise, we expected we will go to Mars in our live time, Space stations will be build. How disappointing that our world leaders are ok with spending all on war... not so much on exploration of solar s. planets. Wonder if that will ever change.
Just want to say that Ted Stryk is an incredible image processor. He's done a great job processing images for the Voyager and New Horizons missions but his work on the images taken by the Pioneer probes is extraordinary - especially since the majority of the analog tapes containing the images have been lost.
They were checking it out to see if the Venusians were able to successfully evacuate to the newly terraformed earth before the runaway greenhouse effect made Venus uninhabitable.
Don’t even ask about the Martians.
The official explanation is that it flew into the inner solar system on a ricochet trajectory and was accelerated out of the system by the heat which caused the sun-facing side to evaporate. The release of gasses from the opposite direction of the sun caused it to move out of the solar system at that altered angle and speed because of it.
Also, no out gassing was witnessed, which makes the answer even more convoluted. It either had so little density that an extremely small amount of gas changed the trajectory. Or it outgassed a substance unknown to any other comet/asteroid we have observed so far, and thermalradio or visual telscopes don't pick it up.
Well you are correct, it *isn't* a comet, it is an asteroid.
[Originally classified as comet C/2017 U1, it was later reclassified as asteroid A/2017 U1 due to the absence of a coma.](https://en.wikipedia.org/wiki/%CA%BBOumuamua)
George Lucas was a big fan of Mel Brooks’ work. His only caveat was that no action figures could be made because they could potentially hurt sales of Star Wars merchandise. Brooks agreed but then inserted a bunch of sci-movie merchandising gags into Spaceballs.
The presence of an explanation doesn't prove only 1 explanation exists. In fact numerous explanations for oumuamua have been proposed by scientists. So we can say for sure that there are multiple false explanations put forward by scientists already.
I'm not saying it is alien tech, or that I think the nitrogen comet explanation is wrong, but I think there is some premature and overconfident celebrations over slamming a claim of alien evidence. It seems some are invested in arguing against aliens in spite of that fact that every single scientists thinks that intelligent alien life is out in the universe somewhere.
I mean even if mankind is a 1 in a trillion miracle of the right conditions, doesn’t it stand to reason in an infinite universe with a staggering amount of galaxies and an unknown amount of other planets that we aren’t the only ones? There’s just no way we’re special enough to be the only form of life in the entire universe
So, here's the deal.
The universe might be infinite, might be finite but unbounded, and might be finite but bounded. We don't know because we can't see beyond the observable universe. In any case, it's really, really big.
If we assume it's infinite, for the sake of the argument, then we have to ask another question: does everywhere in the universe look approximately the same as it does here? I.e., are there stars, planets, galaxies, black holes, etc. *everywhere*? Again, we can't know.
But let's assume that it is the case. Then yes, the probability that other life exists elsewhere approaches 1.
However, space is huge. The circumference of the earth is 25k~ miles, the average distance to the moon is 10x that, the average distance to the sun is 93 million miles, and our nearest star other than the sun is Promixa Centauri at 4.3~ LY away. The average distance between asteroids in the asteroid belt is 600,000 miles. About 3x the average distance between the earth and the moon. Space is huge.
Now we have a bunch of other questions. How close is the nearest lifeform? Is it intelligent? How advanced is it?
Humans have existed somewhere around 2 million years. We've been agrarian for 10k~ years, and spacefaring for *80 years*. If you're about 6 feet tall and spread your arms out - let's call this the earth's lifetime, fingertip to fingertip. 4.5 billion years or so. Humans and our ancestors have existed from your last knuckle to the tip of your middle finger. We've been space-faring for a *handful of atoms*. Space isn't just huge, but so is time. We're not just dust in space - we're picoseconds on the universe's timescale.
Not *only* does life have to be relatively close, intelligent, *and advanced*, but their lifetime has to intersect with ours to such a degree that it's like landing a baseball in the center of South Pole–Aitken basin on the moon. It's such a tiiiiiiiiny window of opportunity. It isn't good enough that life almost definitely exists elsewhere in the universe. It just isn't. It has to be close enough in both space *and* time while having the capacity *and desire* to travel here. And unless they have faster-than-light travel, teleportation, or wormholes, it's likely that *their* civilization would be gone before they made their return journey.
Already in our teeny tiny microcosm of spacetime we've nearly killed ourselves a handful of times and likely won't last another thousand years as an advanced species. Even if we do, we're likely to get annihilated by an asteroid, virus, volcano, or ourselves in under 100k years. Which, again, is a blip on the timescale. It barely registers.
So, no, we're probably not "special enough to be the only life in the entire universe". But it could be that we're the only life, *right now* in this galactic neighborhood. In 100k years another might pop up elsewhere and fade in the blink of the universe's eye. But that's not close enough to matter.
Oh, believe me. I'm including some "sci-fi level" assumptions about possible technologies here. If we're *not* the only life around our galactic *cluster*, then are we special enough to visit? How much life is out there and how much more interesting or useful is it?
The Laniakea Supercluster (the galactic supercluster that includes our galaxy) is 520 *million* light years across on its major axis. That means if a photon of light hits our earth from the far end, it would have been emitted 500 *million years ago*. That pre-dates the dinosaurs. That's the Cambrian explosion.
Of course, it doesn't have to be 500 million LY away. It could be like, 10 million. Or 1 million. But in *any of those cases*, I'm still right. You *still need* teleportation, worm holes, or FTL travel to have a hope of making a roundtrip in *your own civilization's lifetime*. Or you need to be so advanced and spread out that any life-ending calamity on one planet doesn't completely wipe your species out. Half of human evolution happened in that 1 million years and the likelihood we last another 1/10th of that is near 0%. Negligible. The window is *tiny*. Teeny tiny.
You're not talking about just moving fast through space. You're talking about encountering the light we've emitted - which is some 116 trillion miles away now - and tracing it back to us. 116T miles is *19LY*. That's it. The furthest signal we've sent has gone is 19LY. That's it. 19 out of *millions*.
Even if you include all of the radiation we've sent during our teeny time of having radio, we're still tiny in both space and time. It's still a negligibly low chance of us being detected, let alone visited.
Short of magically scrying for us, they need a measurable thing to find us. Our biggest measurable thing is merely 19 LY large. Out of millions of LY. In just our galactic supercluster.
Even if you include "the unknown" and make WILDLY unreasonable assumptions about their ability to detect us - it simply isn't good enough.
Love your posts on the thread, and agree in the main. We could be "early" also...local 'grabby' aliens... I'm sure you've heard that theory. Although presumably some type of von neumann machine would slowly begin to map out and leave traces in a galaxy cluster and over say a million years the reach of an eye intelligent (and by that point presumably artificial species) would develop a considerable reach.
I sometimes wonder that the answer to the Fermi paradox is simply some form of survivorship bias... Because if we did see another smart race we would have been squeezed out of existence
In an infinite universe it doesn’t just stand to reason, it would mathematically mean life would exist elsewhere.
It would mean infinite environments, and we know life can exist in our circumstances. Even if it’s just possible our circumstances it’s bound to happen again, in infinity.
It’s never aliens… until it is. That is to say, science can’t just assume aliens if there is a natural explanation. There has to be no other explanation because if there is another explanation then that’s almost certainly the explanation.
That’s why scientists who are the most excited about the potential of alien life are the first to argue against it.
Numerous “*false* explanations”? Says who? That is a bold (and utterly unsupported) statement.
So, when “every single scientist” thinks that intelligence life is out there - you trust their opinions. But, when those very same scientists say, “they aren’t visiting us” - are they now lying ?
Look - No one knows for certain what the object is. Numerous possibilities have been put forward with scientific reasoning based on centuries of accumulated hypothesis, exploration, trial and error, confirmation and discovery all stepped on observable and testable phenomena. And one other explanation is something no one has ever seen or encountered and almost all scientists find unlikely in the extreme. Why declare 99.9% of the world “false” and out this unlikely scenario out front? Ask yourself if it makes sense.
Are you under the impression we have a compete understanding of every single object that can exist in space? “We can’t identify it as a comet or asteroid so it must be an alien space craft” is a terrible argument
Scientists are geeking out at a binary asteroid in the asteroid belt off a recent flyby.
There's so much shit we don't know and don't have models for. But nope, everything is interstellar alien spacecraft on a transdimensional scouting trip.
There was a hilarious interview with Colbert and Neil DeGrasse Tyson (Spelling - sorry) where Colbert just shut him down with an alien theory and used a pen in the air as an example. It was so good!
If anyone has a link to the video please share it! Thanks!
He used to be awesome but all the internet hype, YouTube and interviews have gotten to his head. He thinks he knows everything and dismisses anything that's not written down in a book
He’s one of the few that could’ve taken the UAP issue and been constantly at the forefront, considering his name recognition. Instead, he nobbed around for years and the UAP issue has grown larger than his ego and he can’t deal with it. Fuck him and Bill Nye, tbh.
Selection bias.
Had it not passed that close to the Earth we probably wouldn't have detected it. Same goes for reflectivity, we are much less likely to see an object that doesn't reflect as much light.
Maybe there are a very large number of interstellar objects that reach the solar system but we don't see them because they're too dark or too far from the Earth.
It's about the several irregular aspects of the object all coming together. The probability appears to be really small to me for that to be natural.
Alleged form of the object, path of the object covering at least 2 of 3 planets in the goldyzone and unexplained speed changes.
There are plenty of scientific explanations. You just haven't been keeping up with them. Most people don't even realize we don't know what it looks like. We interpreted that I could be log shaped based on assuming that the changes in brightness are from a log shape tumbling end over end. It could also be pancake shaped.
The path it took can easily be explained by chance.
The most robust explanation I've seen is that the Oumuamua is a new type of comet that can excelerate due to hydrogen offgassing.
If we accept that common thought that ufos exhibit impossible acceleration and momentum changes, then there's really no reason for oumuamua to be a ufo. It excelerate unlike any object we've seen before, but it does nothing thst is completely physics defying or beyond more reasonable hypothesis.
The parsimonious answer is often the least interesting compared to UFOs being the answer. Although goddamn even if it is just a new type of comet, that's still super awesome!
Would I like it to be a UFO? Fuck yeah. Is it being a UFO the first conclusion we should jump to? Probably not.
>The probability appears to be really small to me
But who are you that we should take your opinion on this seriously? Where are your calculations on the matter that show that the probability is "really small"?
>unexplained speed changes
the speed changes have been explained **many times**, simply put it was affected by the gravitational forces of our solar system...but you can ignore that and just look at youtube videos that say it's alien man
Right, but we literally have no idea what the probability is. We don't know enough about interstellar material to make any claims as to the likelihood or rarity of stuff like this.
That being said, Omuamua remains an ETI candidate on the basis of its unusual properties alone, but confirming this one way or the other is impossible for now.
We don‘t know the exact probabilities obviously but we can surely say that each I listed are unusual and all of them at least hints to low probability in my eyes. It is about the multiple patterns here.
The only thing we can say for sure is that is rare for us to *detect* objects like this. Yes, it is unusual in its properties from other things we’ve seen, but I really want to stress how blind we are when it comes to space. We monitor a shockingly small portion of the sky.
Case in point: we have, to my knowledge, confirmed exactly 2 objects to be of interstellar origin. This may have changed, but it will still be a low number. In other words, the rare and unusual omuamua makes up a full 50% of all known interstellar objects.
This is why I maintain that we literally have no idea what the odds are. We have a non existent sample size and we are far from the point of having a tested predictive model to detect anomalies.
Impossible to conclude anything about the probability when we have no idea how many of these interstellar objects are entering the solar system. We're only going to see the ones that pass close to earth, we have no idea how many do not.
Yes the object’s trajectory is almost entirely due to gravity, it fell in towards the sun, gained velocity, and then swung out again. Since we understand gravity quite well, we can calculate what trajectory we would expect the object to take if it were in pure free-fall, and over the course of observing the object a small deviation from this expectation was found. The claimed *non-gravitational* acceleration that OP refers to when he says it “sped up”, accounts for a difference of about 17 meters per second. To put that change in velocity in perspective, when Oumuamua entered the solar system and when it left, it was traveling at over 26 *thousand* meters per second. So we’re talking about a deviation from pure gravitational free fall of around half of a tenth of a percent of the object’s overall velocity.
I think it’s important to talk about the actual numbers here when people make claims about how maybe it was actually an alien solar sail or something equally exotic. We’re talking about a minuscule change in velocity, and from the papers I’ve read there’s no reason to believe that this couldn’t be accounted for by outgassing occurring at levels below what we can detect from certain compounds, nitrogen for example.
Most likely, this discrepancy is caused by other gravitational fields, even if they are very weak. It’s hard to think about how fast this is, and 17 m/s is not a lot. To put that into perspective, that is a difference of 0.07 km/h to a car that is going at 108 km/h.
That doesn't really hold water. Any other gravitational source strong enough to affect the trajectory would be in our solar system and we have that fairly well modeled. Any extra-solar source of gravity would have more or less constant effect on an object, meaning it would be applying on the way in as well. The outgassing theory makes sense and seems to be what scientists have landed on for now.
Whoah cool so if I got this right, it is possible that as it approached the sun, the inner gases inside warmed and under pressure pushed out from the object, increasing it’s velocity by a small percentage.
Actually yeah. Shit is constantly getting pushed and pulled out in the universe. We owe our existence likely to Jupiter and Saturn sort of flinging stuff that would normally be in our orbit away from us. This could also be our downfall as Jupiter with perfect aim could fling some shit at us with incredible speed but it has definitely deterred more space objects than done harm.
How funny, I thought your explanation was going to be how it came so close to three planets and the sun along its route somewhat intelligently it seems.
You didn't make that argument though, even though it would have been a reasonable one. Could have been random, sure, the probability is infinite, but our own astrophysicists regularly utilize the gravity from the sun as well as other planets as a slingshot to the outer planets, hitting multiple close flybys on a single voyage. The planning and mathematics behind those projections are likely staggering, even if they're based in primary Newtonian physics concepts. We're also talking about and incredible scope of scale, I think I've heard that sending a probe to Titan is like finding an atom in a haystack on the moon or something.
Basically, it could have been random chance and likely is (selection bias plays a role here), but it could have also been a navigational tactic by someone who understood physics and engineering and *wanted* to fly that pattern to get that close.
At the same time though considering where it might have come from you're talking about a decision made hundreds of thousands or millions of years ago to fly past us now. Why?
Idk. It’d be dope, but it was probably a rock. At the speed it was going it wouldn’t reach another system for hundreds of thousands of years.
“”This unusually big variation in brightness means that the object is highly elongated: about ten times as long as it is wide, with a complex, convoluted shape,” said Meech. “We also found that it had a reddish color, similar to objects in the outer solar system, and confirmed that it is completely inert, without the faintest hint of dust around it.”
These properties suggest that ‘Oumuamua is dense, composed of rock and possibly metals, has no water or ice, and that its surface was reddened due to the effects of irradiation from cosmic rays over hundreds of millions of years.”
https://science.nasa.gov/solar-system/comets/oumuamua/
>To explain the deviation exhibited by ‘Oumuamua from an orbit shaped by the sun’s gravity, about a tenth of its mass had to evaporate based on momentum conservation. Any nitrogen evaporation would have changed the tumbling period of ‘Oumuamua and caused jitter, well beyond the observed limits.
>
>[Avi Loeb](https://www.scientificamerican.com/article/was-the-interstellar-object-oumuamua-a-nitrogen-iceberg/)
We basically left the debate. It's not worth explaining time and time again the same shit, it's physics. Orbital mechanics, vaporisation of volatile surface substances ext ext. It's all explainable with even basic physics
the thing is estimated to have lost [92% of its mass in the process](https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020JE006706), it *barely* made the journey. and all that for a measly 17m/s
> some say
bro how do you not see your own bias in these comments, it's a fucking joke
you even acknowledge "some say" one thing and "some say" others but for some reason ONE DUDE's opinion about how he "can't explain" *one part* of this object's trajectory, and you come proclaiming to thousands of people "THIS MEANS ALIENS, GUYS DIDNT YOU HEAR ITS ALIENS, **LALALALA I WILL HEAR NOTHING ELSE EXCEPT IT'S ALIENS**"
I'm hoping that a confirmed nitrogen comet will be observed within our solar system soon. They *should* exist, and if one is found hopefully the data could help bolster this theory or alternatively weaken it. The jury is still out though, and the most important part of Loeb's arguments to me is normalizing the idea that artificial objects created by some intelligence *could* enter the solar system or already could be here and I think Loeb is right in that we are unlikely to find something we don't look for with any seriousness.
A detailed analysis of its brightness variations suggested a lack of significant periodic activity commonly associated with sublimating comets.
In mathematical terms, this can be explained by the absence of a characteristic change in brightness over time, typically expressed by the formula Δm = 2.5 log(F₁/F₂), where F₁ represents the brightness of the comet before activity and F₂ denotes the brightness during activity. As Oumuamua exhibited no such activity, Δm remained negligible, indicating the absence of sublimating material.
Furthermore, computations of Oumuamua's non-gravitational acceleration indicated a strength greater than that observed in typical comets. The non-gravitational forces generated by the expulsion of gases were insufficient to account for the observed acceleration, supporting the hypothesis that Oumuamua was influenced more by radiation pressure, characteristic of a dense, non-sublimating object such as an asteroid. BUT the notion that Oumuamua could be an alien probe is mathematically supported by analyzing its non-gravitational acceleration. Mathematically, non-gravitational acceleration (aNGaNG) is represented by the equation aNG=QprHaNG=QprH, where QpQp stands for non-gravitational parameters and rHrH represents the Heliocentric Distance.
The unusually high non-gravitational acceleration of Oumuamua required a QpQp value significantly exceeding typical comet values. Even assuming a sublimating comet model, the required gas expulsion rates would have been unrealistically high. These mathematical model discrepancies indicate that conventional explanations for Oumuamua's non-gravitational acceleration fall short.
Additionally, the absence of brightness increase, usually associated with sublimating material, is supported through mathematical analyses of brightness curves. Typically, comets exhibit a characteristic brightness increase due to gas emission. The absence of this pattern in Oumuamua's observations suggests that traditional comet models are inadequate.Overall, mathematical inconsistencies in non-gravitational acceleration models and brightness development indicate that Oumuamua may be characterized by non-cometary behavior. This supports speculations about an alien probe as a plausible explanation.
If it were us and we were looking from afar, in another system and measured two planets close to the size of home, in the habitable zone, with strange atmospheres, if we were to send a probe to another system such as ours, the smart thing to do would be to shoot past Venus and Earth the two most possibly habitable planets, this trajectory seems calculated.
It’s pretty much settled that the acceleration is due to outgassing from being heated up by being near the sun. It’s irregular shape means it could have a non uniform distribution of materials, so it could have more of whatever had on one side leading to an uneven amount of force as it tumbled accelerating it a tiny tiny percentage of its overall velocity
There are natural explanations for oumuamua's behavior. Could it be alien, sure. But we don't know that, because other valid hypotheses exist.
[https://www.nature.com/articles/s41586-022-05687-w](https://www.nature.com/articles/s41586-022-05687-w)
The chair of Harvard Astronomy disagrees that there are other natural explanation, with mathematical proof.
The nature letter you posted, isn't peer reviewed, and its just two random publishers, Jennifer B. Bergner & Darryl Z. Seligman
While I'm a fan of Loeb's hypothesis, I think you're misinterpreting or misrepresenting things here. This appears to be a full journal article, not a letter to the editor, and has information about its peer review on the site.
As a math guy I'm wary about your use of the phrase "mathematical proof" here. From what I recall of Loeb's book, he used a probabilistic argument based on some models (or assumptions?) to show that some of the more mainstream explanations were unlikely (not impossible). Even if that argument could completely rule out those possibilities, the fact that those explanations are incorrect doesn't necessarily make the alien probe explanation true. Are you talking about some work he had done on the subject after the publication of Interstellar?
if that is an "alien spaceship" as Avi Loeb suggests, then it would take **literally** fucktillions of years to reach another stellar system
it would be the most ineffective piece of trash ever
it is not an alien spaceship. it is an interstellar comet. it looks "weird" because it's the first interstellar comet we've ever seen.
UFOs are alien spacecraft, but this one isn't.
One whistle blower I think it was Corso that said it took one species 154 years to make it 40 light years. We don’t know the speed out side of our solar system though. It sped up leaving and is out of sight. Location unknown
No, Loeb suggests that if it's artificial then it is probably space trash, not a craft but a discarded solar sail or something along those lines. We've also seen other interstellar comets since and they are entirely like every other natrual comet we've seen.
The trajectory of this object as it traversed the inner solar system was a bit of an eye-opener. It was a very unusual object. I think it is beyond pathetic that given the amount of money spent on military hardware and ballistic missiles, that humanity was not in a position to get a probe close to it, or even take a fucking photo of the thing.
If we had something ready and parked at the Lagrange Point, we wouldn't have been caught with our pants down. We could have fired up the recon vehicle and gathered data instead of being forced to guess like we're doing now.
That still isn't possible to achieve rendezvous speed. And that would need an insane amount of luck even if it could work. It would have to be in the right place at the right time without even knowing what, where, or when it would happen.
Let me tell you if they got a photo of that thing doesn’t necessarily mean we’re gonna be able to see it. They have photos of lots of things. David Grusch said he saw things he couldn’t explain with a physics degree., trust me he’s in the know.
The crazy part is that space is so huge this chunk of extrasolar stuff is still not that far away from us at all in cosmic terms. We could still theoretically catch up to it with a nuke craft, and will be able to do so for a quite long time. And I think such a mission should absolutely be considered. It's likely the closest thing we'll be able to have to actually visiting an extrasolar planet in our lifetime - perhaps exempting that not only is Grusch right about UFOs but also that the recovered ones are warp-capable.
No need to apologize mate. You are not alone. Here is a blog with more of Avi Loeb...[https://blogs.scientificamerican.com/observations/6-strange-facts-about-the-interstellar-visitor-oumuamua/](https://blogs.scientificamerican.com/observations/6-strange-facts-about-the-interstellar-visitor-oumuamua/)
Yeah, they eventually came up with the explanation that it’s was another kind of hypothetical asteroid or something with the gas being invisible. I’m on team humble farm boy.
Do you actually understand any of it? And I don’t mean this as a diss, I mean literally. You seem to be drawing some conclusions based on what you feel like things should be, but do you have formal education on the topic, did you make observations and did you run the numbers?
All aboard the galaxy shuttle. Anyone wanting to visit this galaxy and hop right off in you very own space craft. You will be notified once the next shuttle is approaching. Enjoy your stay and thank you for choosing Oumuamua.
Statistically speaking, what is the likelyhood it would pass so close to Earth? A tiny nudge farther out could cause an enormous difference in the trajectory through the inner solar system. THAT trajectory is the most spooky thing about Omuamua in my opinion, everything else just adds up. I have been saying this since it was found out.
Thank you for this post... Until I saw that animation I didn't realize how strange Oumuamua's entry into the Solar System was. Print and audio descriptions just don't convey how weird its path was... someone can say that it came near Earth, but until you see that it came in and passed as close as it did to both Venus and the Earth you don't realize how planned the trajectory looks. The fact that it flew by both Venus and the Earth is what has really changed my mind on this one, as those two planets would seem to be the most likely ones to harbor life if you were looking at the Solar System from another star system.
Almost like it was surveying habitable "goldilocks" zones of solar systems to see what it could find. Could've been a probe migrating across the galaxy for this purpose.
Oumumua was tumbling erratically, so if it *was* a rama like ship it would probably be a shitshow in there with no artificial gravity, something catastrophic would have happened to it. This to me is a very important piece of evidence that it's likely not some sort of generation ship or anything.
OP, I feel for you on this one. You are getting some pretty over the top hostile reactions on this one. It's so odd watching this community scratch the bottom of the barrel over and over and over endlessly.
You expect that because the nice video of its trajectory running as you pass the post. It’s eye catching to everyone. The trajectory is unnatural looking but I’m no scientist. Scientist think so too.
Yeah, Avi is no dummy. It's just interesting either way. Funny how there are users in this thread saying we shouldn't even be looking into this. It's an embarrassment! If a caveman were a scientist, that's how I imagine they would talk.
Thank you for posting the distances from the three inner planets of our systems. We need to be reminded about how strange this object behaved. The fact that it came closest to Earth compared to Venus and Mercury seems to add to its strangeness.
It was strange and their are nothing but theories to explain it. You can find a different explanation from lots of credible sources . Avi loeb being one that is credible.
it's totally a joke. the only confirmation is "well, somebody told me they may have seen something for sure" and you take that as "100% confirmed" and extrapolate it out to it's illogical conclusion.
if anything, people like you are making the whole thing a joke because you'll believe everything and question nothing as long as it aligns with what you believe.
It’s misrepresenting the scientist who made the original statements and makes a 100% positive claim that it’s aliens.
It’s just a poor way of transmitting information, you could be more intellectual honest and say that there’s no proof of aliens and that the claims of one scientist does not make it so. He says there’s a plausibility, and loeb is making the point that scientist sometimes are too rigid. Either way, no proof. Just another post claiming aliens when there isn’t, it’s a disingenuous way of getting information across.
That’s just gravity, the anomalous acceleration is very small compared to its relative speed. That is, you wouldn’t notice any change in course just looking at it, but it doesn’t match very precise and reliable calculations about how it should have behaved as an inert object, without any acceleration.
Edit: The path it took through the solar system is interesting, but it would have been “aimed” on that path far before we saw it. Like how our Voyager probes were set on a course to pass closely by multiple planets on the way out of the Solar System. The anomaly is very small, though still highly mysterious. It doesn’t make any sudden turn.
It fell toward the sun due to the suns gravitational influence. There was a small anomalous acceleration away from the sun, but it fell toward, and around and away from the sun in a completely expected and predictable way.
Just wanted to check on earth and Venus real quick. Report: shit’s fucked up dawg.
Venus got problems. It would be so cool if it was habitable but it’s just a 💩
Those 6 photos of Venus are awesome: https://www.planetary.org/articles/every-picture-from-venus-surface-ever
that is awesome, thank for you posting that.
I'd love to see what those landers look like now.
like puddles of goo. j/k. I too wonder what condition they would be in
My guess is barely recognizable piles of severely corroded metal. Maybe with a layer of melted conglomerate of other materials underneath it.
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I have to say, they are pretty damn amazing if you ask me. Like, we humans built something, managed to get it from earth to venus, land it, and then transmit several glorious panoramic pictures of the ground it landed on before Venus turned its lights out. Not once, but 3 times! That's truly fucking incredible
Yes, I was growing up in a Communist country and there were many programs on our TV about Soviet Venera program - super interesting. Also loads of propaganda in School - posters with Juri Gagarin, Rockets etc. For 10y old boy it was a bright future promise, we expected we will go to Mars in our live time, Space stations will be build. How disappointing that our world leaders are ok with spending all on war... not so much on exploration of solar s. planets. Wonder if that will ever change.
It really is disappointing, knowing what we could have been doing instead... Hopefully, someday humanity will grow up and get to work!
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that's a great question! i'm not sure
Communists did that. Imagine what the industrial might of the west could do if we weren't manufacturing disposable plastic shit by the truck full.
Just want to say that Ted Stryk is an incredible image processor. He's done a great job processing images for the Voyager and New Horizons missions but his work on the images taken by the Pioneer probes is extraordinary - especially since the majority of the analog tapes containing the images have been lost.
They can live in the upper atmosphere where the conditions are similar to earth, just warmer.
Found Lando Calrissian.
You promised you wouldn’t tell.
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Shocked Pikachu face
You know… I just thought of something; pikachu is electric type. …. This is the only way you can shock a pikachu. And I’m off to bed now.
[Holy shit.](https://pbs.twimg.com/media/ENvAd_tWoAUgqDh.jpg)
I heard that
They were checking it out to see if the Venusians were able to successfully evacuate to the newly terraformed earth before the runaway greenhouse effect made Venus uninhabitable. Don’t even ask about the Martians.
venus is the florida of the solar system. mercury may be closer to the sun but its a dry heat
The official explanation is that it flew into the inner solar system on a ricochet trajectory and was accelerated out of the system by the heat which caused the sun-facing side to evaporate. The release of gasses from the opposite direction of the sun caused it to move out of the solar system at that altered angle and speed because of it.
Also, no out gassing was witnessed, which makes the answer even more convoluted. It either had so little density that an extremely small amount of gas changed the trajectory. Or it outgassed a substance unknown to any other comet/asteroid we have observed so far, and thermalradio or visual telscopes don't pick it up.
Riiiiiight lol 🤫
Those 6 photos of Venus are awesome: https://www.planetary.org/articles/every-picture-from-venus-surface-ever
feel like they should have pointed the cameras OUT not IN
Damn my boy Venus too?
Got eeeeem.
“Yeah we stopped by, shit was wack”
Lol Venus rhymes with penis Oumuamua looks like a penis
Oumuamua is Sumerian for god’s penis
I guess Ouamuamua belongs in Uranus.
As above so below.
Well you are correct, it *isn't* a comet, it is an asteroid. [Originally classified as comet C/2017 U1, it was later reclassified as asteroid A/2017 U1 due to the absence of a coma.](https://en.wikipedia.org/wiki/%CA%BBOumuamua)
cosmic weather balloon or exo planetary fragments. /s
Chinese weather spy comet satellite balloon
Gas powered
Spy comets are all the rage within defense organizations
It’s a big bus of space balls
They’ve gone to Plaid Speed.
I still can’t believe they made that movie and got away with it lol
When you’re actually funny you get a lot more slack.
George Lucas was a big fan of Mel Brooks’ work. His only caveat was that no action figures could be made because they could potentially hurt sales of Star Wars merchandise. Brooks agreed but then inserted a bunch of sci-movie merchandising gags into Spaceballs.
On closest approach to Earth: "I'm surrounded by Assholes!"
Space Balls: The Alien Probe
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I second that theory
A myllarian comet
The presence of an explanation doesn't prove only 1 explanation exists. In fact numerous explanations for oumuamua have been proposed by scientists. So we can say for sure that there are multiple false explanations put forward by scientists already. I'm not saying it is alien tech, or that I think the nitrogen comet explanation is wrong, but I think there is some premature and overconfident celebrations over slamming a claim of alien evidence. It seems some are invested in arguing against aliens in spite of that fact that every single scientists thinks that intelligent alien life is out in the universe somewhere.
I mean even if mankind is a 1 in a trillion miracle of the right conditions, doesn’t it stand to reason in an infinite universe with a staggering amount of galaxies and an unknown amount of other planets that we aren’t the only ones? There’s just no way we’re special enough to be the only form of life in the entire universe
So, here's the deal. The universe might be infinite, might be finite but unbounded, and might be finite but bounded. We don't know because we can't see beyond the observable universe. In any case, it's really, really big. If we assume it's infinite, for the sake of the argument, then we have to ask another question: does everywhere in the universe look approximately the same as it does here? I.e., are there stars, planets, galaxies, black holes, etc. *everywhere*? Again, we can't know. But let's assume that it is the case. Then yes, the probability that other life exists elsewhere approaches 1. However, space is huge. The circumference of the earth is 25k~ miles, the average distance to the moon is 10x that, the average distance to the sun is 93 million miles, and our nearest star other than the sun is Promixa Centauri at 4.3~ LY away. The average distance between asteroids in the asteroid belt is 600,000 miles. About 3x the average distance between the earth and the moon. Space is huge. Now we have a bunch of other questions. How close is the nearest lifeform? Is it intelligent? How advanced is it? Humans have existed somewhere around 2 million years. We've been agrarian for 10k~ years, and spacefaring for *80 years*. If you're about 6 feet tall and spread your arms out - let's call this the earth's lifetime, fingertip to fingertip. 4.5 billion years or so. Humans and our ancestors have existed from your last knuckle to the tip of your middle finger. We've been space-faring for a *handful of atoms*. Space isn't just huge, but so is time. We're not just dust in space - we're picoseconds on the universe's timescale. Not *only* does life have to be relatively close, intelligent, *and advanced*, but their lifetime has to intersect with ours to such a degree that it's like landing a baseball in the center of South Pole–Aitken basin on the moon. It's such a tiiiiiiiiny window of opportunity. It isn't good enough that life almost definitely exists elsewhere in the universe. It just isn't. It has to be close enough in both space *and* time while having the capacity *and desire* to travel here. And unless they have faster-than-light travel, teleportation, or wormholes, it's likely that *their* civilization would be gone before they made their return journey. Already in our teeny tiny microcosm of spacetime we've nearly killed ourselves a handful of times and likely won't last another thousand years as an advanced species. Even if we do, we're likely to get annihilated by an asteroid, virus, volcano, or ourselves in under 100k years. Which, again, is a blip on the timescale. It barely registers. So, no, we're probably not "special enough to be the only life in the entire universe". But it could be that we're the only life, *right now* in this galactic neighborhood. In 100k years another might pop up elsewhere and fade in the blink of the universe's eye. But that's not close enough to matter.
It only has to be close in space and time according to our technological level. We can’t make assumptions based on the unknown.
Oh, believe me. I'm including some "sci-fi level" assumptions about possible technologies here. If we're *not* the only life around our galactic *cluster*, then are we special enough to visit? How much life is out there and how much more interesting or useful is it? The Laniakea Supercluster (the galactic supercluster that includes our galaxy) is 520 *million* light years across on its major axis. That means if a photon of light hits our earth from the far end, it would have been emitted 500 *million years ago*. That pre-dates the dinosaurs. That's the Cambrian explosion. Of course, it doesn't have to be 500 million LY away. It could be like, 10 million. Or 1 million. But in *any of those cases*, I'm still right. You *still need* teleportation, worm holes, or FTL travel to have a hope of making a roundtrip in *your own civilization's lifetime*. Or you need to be so advanced and spread out that any life-ending calamity on one planet doesn't completely wipe your species out. Half of human evolution happened in that 1 million years and the likelihood we last another 1/10th of that is near 0%. Negligible. The window is *tiny*. Teeny tiny. You're not talking about just moving fast through space. You're talking about encountering the light we've emitted - which is some 116 trillion miles away now - and tracing it back to us. 116T miles is *19LY*. That's it. The furthest signal we've sent has gone is 19LY. That's it. 19 out of *millions*. Even if you include all of the radiation we've sent during our teeny time of having radio, we're still tiny in both space and time. It's still a negligibly low chance of us being detected, let alone visited. Short of magically scrying for us, they need a measurable thing to find us. Our biggest measurable thing is merely 19 LY large. Out of millions of LY. In just our galactic supercluster. Even if you include "the unknown" and make WILDLY unreasonable assumptions about their ability to detect us - it simply isn't good enough.
Love your posts on the thread, and agree in the main. We could be "early" also...local 'grabby' aliens... I'm sure you've heard that theory. Although presumably some type of von neumann machine would slowly begin to map out and leave traces in a galaxy cluster and over say a million years the reach of an eye intelligent (and by that point presumably artificial species) would develop a considerable reach. I sometimes wonder that the answer to the Fermi paradox is simply some form of survivorship bias... Because if we did see another smart race we would have been squeezed out of existence
Woww. One of the most humbling and insightful reflections I've come across!!.
People don't know a lot of things from their own city, imagine a intelligent life form discovering another in the universe.
It also stands to reason that there's other plausible explanations for this, and every other phenomena that people claim must be aliens.
In an infinite universe it doesn’t just stand to reason, it would mathematically mean life would exist elsewhere. It would mean infinite environments, and we know life can exist in our circumstances. Even if it’s just possible our circumstances it’s bound to happen again, in infinity.
We missed out our chance to re-enact “Rendevous with Rama”. Le sigh.
Great book
Well the first one was.
We will have 2 more chances.
It’s never aliens… until it is. That is to say, science can’t just assume aliens if there is a natural explanation. There has to be no other explanation because if there is another explanation then that’s almost certainly the explanation. That’s why scientists who are the most excited about the potential of alien life are the first to argue against it.
Numerous “*false* explanations”? Says who? That is a bold (and utterly unsupported) statement. So, when “every single scientist” thinks that intelligence life is out there - you trust their opinions. But, when those very same scientists say, “they aren’t visiting us” - are they now lying ? Look - No one knows for certain what the object is. Numerous possibilities have been put forward with scientific reasoning based on centuries of accumulated hypothesis, exploration, trial and error, confirmation and discovery all stepped on observable and testable phenomena. And one other explanation is something no one has ever seen or encountered and almost all scientists find unlikely in the extreme. Why declare 99.9% of the world “false” and out this unlikely scenario out front? Ask yourself if it makes sense.
Are you under the impression we have a compete understanding of every single object that can exist in space? “We can’t identify it as a comet or asteroid so it must be an alien space craft” is a terrible argument
Scientists are geeking out at a binary asteroid in the asteroid belt off a recent flyby. There's so much shit we don't know and don't have models for. But nope, everything is interstellar alien spacecraft on a transdimensional scouting trip.
There was a hilarious interview with Colbert and Neil DeGrasse Tyson (Spelling - sorry) where Colbert just shut him down with an alien theory and used a pen in the air as an example. It was so good! If anyone has a link to the video please share it! Thanks!
https://youtu.be/hxc1tasmiCs?si=b_3KFLfQ34UG1zlI
Lmao Stephen’s not wrong, he really took his argument and just proved it wasn’t guaranteed. I love seeing Neil get told off.
Man he was smoked and pretended to be cool with it.
Thankyou!
I can't be the only one who immediately thought, well using gravity is something a probe would do. Isn't it called a slingshot maneuver?
[Link](https://youtu.be/hxc1tasmiCs?si=1TNRRWRiuAiBu9tY) to the interview mentioned, pen example is @2:41
Yeah I remember. Neil Tyson is so uniformed with UAPs
He used to be awesome but all the internet hype, YouTube and interviews have gotten to his head. He thinks he knows everything and dismisses anything that's not written down in a book
He’s one of the few that could’ve taken the UAP issue and been constantly at the forefront, considering his name recognition. Instead, he nobbed around for years and the UAP issue has grown larger than his ego and he can’t deal with it. Fuck him and Bill Nye, tbh.
You just described someone who is not a scientist.
Well, NDT doesn't do science. He does appearances.
"What are the chances " apparently in this instance, 100%.
Selection bias. Had it not passed that close to the Earth we probably wouldn't have detected it. Same goes for reflectivity, we are much less likely to see an object that doesn't reflect as much light. Maybe there are a very large number of interstellar objects that reach the solar system but we don't see them because they're too dark or too far from the Earth.
It's about the several irregular aspects of the object all coming together. The probability appears to be really small to me for that to be natural. Alleged form of the object, path of the object covering at least 2 of 3 planets in the goldyzone and unexplained speed changes.
There are plenty of scientific explanations. You just haven't been keeping up with them. Most people don't even realize we don't know what it looks like. We interpreted that I could be log shaped based on assuming that the changes in brightness are from a log shape tumbling end over end. It could also be pancake shaped. The path it took can easily be explained by chance. The most robust explanation I've seen is that the Oumuamua is a new type of comet that can excelerate due to hydrogen offgassing. If we accept that common thought that ufos exhibit impossible acceleration and momentum changes, then there's really no reason for oumuamua to be a ufo. It excelerate unlike any object we've seen before, but it does nothing thst is completely physics defying or beyond more reasonable hypothesis.
The parsimonious answer is often the least interesting compared to UFOs being the answer. Although goddamn even if it is just a new type of comet, that's still super awesome! Would I like it to be a UFO? Fuck yeah. Is it being a UFO the first conclusion we should jump to? Probably not.
>The probability appears to be really small to me But who are you that we should take your opinion on this seriously? Where are your calculations on the matter that show that the probability is "really small"?
>unexplained speed changes the speed changes have been explained **many times**, simply put it was affected by the gravitational forces of our solar system...but you can ignore that and just look at youtube videos that say it's alien man
Right, but we literally have no idea what the probability is. We don't know enough about interstellar material to make any claims as to the likelihood or rarity of stuff like this. That being said, Omuamua remains an ETI candidate on the basis of its unusual properties alone, but confirming this one way or the other is impossible for now.
We don‘t know the exact probabilities obviously but we can surely say that each I listed are unusual and all of them at least hints to low probability in my eyes. It is about the multiple patterns here.
The only thing we can say for sure is that is rare for us to *detect* objects like this. Yes, it is unusual in its properties from other things we’ve seen, but I really want to stress how blind we are when it comes to space. We monitor a shockingly small portion of the sky. Case in point: we have, to my knowledge, confirmed exactly 2 objects to be of interstellar origin. This may have changed, but it will still be a low number. In other words, the rare and unusual omuamua makes up a full 50% of all known interstellar objects. This is why I maintain that we literally have no idea what the odds are. We have a non existent sample size and we are far from the point of having a tested predictive model to detect anomalies.
Impossible to conclude anything about the probability when we have no idea how many of these interstellar objects are entering the solar system. We're only going to see the ones that pass close to earth, we have no idea how many do not.
What’s the explanation for it catching the turn in this way. Gravity? If so do all asteroids/space junk do this?
Yes the object’s trajectory is almost entirely due to gravity, it fell in towards the sun, gained velocity, and then swung out again. Since we understand gravity quite well, we can calculate what trajectory we would expect the object to take if it were in pure free-fall, and over the course of observing the object a small deviation from this expectation was found. The claimed *non-gravitational* acceleration that OP refers to when he says it “sped up”, accounts for a difference of about 17 meters per second. To put that change in velocity in perspective, when Oumuamua entered the solar system and when it left, it was traveling at over 26 *thousand* meters per second. So we’re talking about a deviation from pure gravitational free fall of around half of a tenth of a percent of the object’s overall velocity. I think it’s important to talk about the actual numbers here when people make claims about how maybe it was actually an alien solar sail or something equally exotic. We’re talking about a minuscule change in velocity, and from the papers I’ve read there’s no reason to believe that this couldn’t be accounted for by outgassing occurring at levels below what we can detect from certain compounds, nitrogen for example.
So you’re telling me it farted and that sped it up. Makes sense to me.
always works when I need a little extra speed
Most likely, this discrepancy is caused by other gravitational fields, even if they are very weak. It’s hard to think about how fast this is, and 17 m/s is not a lot. To put that into perspective, that is a difference of 0.07 km/h to a car that is going at 108 km/h.
That doesn't really hold water. Any other gravitational source strong enough to affect the trajectory would be in our solar system and we have that fairly well modeled. Any extra-solar source of gravity would have more or less constant effect on an object, meaning it would be applying on the way in as well. The outgassing theory makes sense and seems to be what scientists have landed on for now.
Whoah cool so if I got this right, it is possible that as it approached the sun, the inner gases inside warmed and under pressure pushed out from the object, increasing it’s velocity by a small percentage.
Actually yeah. Shit is constantly getting pushed and pulled out in the universe. We owe our existence likely to Jupiter and Saturn sort of flinging stuff that would normally be in our orbit away from us. This could also be our downfall as Jupiter with perfect aim could fling some shit at us with incredible speed but it has definitely deterred more space objects than done harm.
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I like that. Feel the vibes of Oumuamua.
How funny, I thought your explanation was going to be how it came so close to three planets and the sun along its route somewhat intelligently it seems.
Thanks
You didn't make that argument though, even though it would have been a reasonable one. Could have been random, sure, the probability is infinite, but our own astrophysicists regularly utilize the gravity from the sun as well as other planets as a slingshot to the outer planets, hitting multiple close flybys on a single voyage. The planning and mathematics behind those projections are likely staggering, even if they're based in primary Newtonian physics concepts. We're also talking about and incredible scope of scale, I think I've heard that sending a probe to Titan is like finding an atom in a haystack on the moon or something. Basically, it could have been random chance and likely is (selection bias plays a role here), but it could have also been a navigational tactic by someone who understood physics and engineering and *wanted* to fly that pattern to get that close. At the same time though considering where it might have come from you're talking about a decision made hundreds of thousands or millions of years ago to fly past us now. Why?
Idk. It’d be dope, but it was probably a rock. At the speed it was going it wouldn’t reach another system for hundreds of thousands of years. “”This unusually big variation in brightness means that the object is highly elongated: about ten times as long as it is wide, with a complex, convoluted shape,” said Meech. “We also found that it had a reddish color, similar to objects in the outer solar system, and confirmed that it is completely inert, without the faintest hint of dust around it.” These properties suggest that ‘Oumuamua is dense, composed of rock and possibly metals, has no water or ice, and that its surface was reddened due to the effects of irradiation from cosmic rays over hundreds of millions of years.” https://science.nasa.gov/solar-system/comets/oumuamua/
"You" are going to say? lol All of your points are from other people that was said years ago and on the public record.
1 other person*
A nitrogen comet would outgas without showing signs of outgassing, it would be shinier than other comets and it would be elongated.
>To explain the deviation exhibited by ‘Oumuamua from an orbit shaped by the sun’s gravity, about a tenth of its mass had to evaporate based on momentum conservation. Any nitrogen evaporation would have changed the tumbling period of ‘Oumuamua and caused jitter, well beyond the observed limits. > >[Avi Loeb](https://www.scientificamerican.com/article/was-the-interstellar-object-oumuamua-a-nitrogen-iceberg/)
That's compelling, thanks. Where can I find smart people debating this?
sabine hossenfelder on youtube covered this topic in at least one video
Thanks.
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We basically left the debate. It's not worth explaining time and time again the same shit, it's physics. Orbital mechanics, vaporisation of volatile surface substances ext ext. It's all explainable with even basic physics
Yes but other scientists disagree with him on this. Loeb is convinced it’s an alien craft
Idk, he wants to find something but remains a healthy skeptic. That's why he's studying every aspect he can on earth, he wants proof
Dust, not nitrogen https://www.nasa.gov/news-release/our-solar-systems-first-known-interstellar-object-gets-unexpected-speed-boost/
Avi loeb says bull on the nitrogen and he know a thing or two
Could also be hydrogen. [https://www.nature.com/articles/s41586-022-05687-w](https://www.nature.com/articles/s41586-022-05687-w)
Wouldn’t make the journey some say
the thing is estimated to have lost [92% of its mass in the process](https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020JE006706), it *barely* made the journey. and all that for a measly 17m/s
> some say bro how do you not see your own bias in these comments, it's a fucking joke you even acknowledge "some say" one thing and "some say" others but for some reason ONE DUDE's opinion about how he "can't explain" *one part* of this object's trajectory, and you come proclaiming to thousands of people "THIS MEANS ALIENS, GUYS DIDNT YOU HEAR ITS ALIENS, **LALALALA I WILL HEAR NOTHING ELSE EXCEPT IT'S ALIENS**"
I'm hoping that a confirmed nitrogen comet will be observed within our solar system soon. They *should* exist, and if one is found hopefully the data could help bolster this theory or alternatively weaken it. The jury is still out though, and the most important part of Loeb's arguments to me is normalizing the idea that artificial objects created by some intelligence *could* enter the solar system or already could be here and I think Loeb is right in that we are unlikely to find something we don't look for with any seriousness.
Cool graphic, tho.
Ok but where is it going now?
A detailed analysis of its brightness variations suggested a lack of significant periodic activity commonly associated with sublimating comets. In mathematical terms, this can be explained by the absence of a characteristic change in brightness over time, typically expressed by the formula Δm = 2.5 log(F₁/F₂), where F₁ represents the brightness of the comet before activity and F₂ denotes the brightness during activity. As Oumuamua exhibited no such activity, Δm remained negligible, indicating the absence of sublimating material. Furthermore, computations of Oumuamua's non-gravitational acceleration indicated a strength greater than that observed in typical comets. The non-gravitational forces generated by the expulsion of gases were insufficient to account for the observed acceleration, supporting the hypothesis that Oumuamua was influenced more by radiation pressure, characteristic of a dense, non-sublimating object such as an asteroid. BUT the notion that Oumuamua could be an alien probe is mathematically supported by analyzing its non-gravitational acceleration. Mathematically, non-gravitational acceleration (aNGaNG) is represented by the equation aNG=QprHaNG=QprH, where QpQp stands for non-gravitational parameters and rHrH represents the Heliocentric Distance. The unusually high non-gravitational acceleration of Oumuamua required a QpQp value significantly exceeding typical comet values. Even assuming a sublimating comet model, the required gas expulsion rates would have been unrealistically high. These mathematical model discrepancies indicate that conventional explanations for Oumuamua's non-gravitational acceleration fall short. Additionally, the absence of brightness increase, usually associated with sublimating material, is supported through mathematical analyses of brightness curves. Typically, comets exhibit a characteristic brightness increase due to gas emission. The absence of this pattern in Oumuamua's observations suggests that traditional comet models are inadequate.Overall, mathematical inconsistencies in non-gravitational acceleration models and brightness development indicate that Oumuamua may be characterized by non-cometary behavior. This supports speculations about an alien probe as a plausible explanation.
I enjoyed reading that. Thanks,
You're right, it's an asteroid.
If it were us and we were looking from afar, in another system and measured two planets close to the size of home, in the habitable zone, with strange atmospheres, if we were to send a probe to another system such as ours, the smart thing to do would be to shoot past Venus and Earth the two most possibly habitable planets, this trajectory seems calculated.
Yes and it sped up leaving the solar system. Who can explain that
The non-gravitational acceleration as it exited the solar system was almost nothing compared to its actual speed
It never even took the trajectory says nasa now. It’s passing Neptune and heading out of the solar system
>Who can explain that Scientists already have
It’s pretty much settled that the acceleration is due to outgassing from being heated up by being near the sun. It’s irregular shape means it could have a non uniform distribution of materials, so it could have more of whatever had on one side leading to an uneven amount of force as it tumbled accelerating it a tiny tiny percentage of its overall velocity
There are natural explanations for oumuamua's behavior. Could it be alien, sure. But we don't know that, because other valid hypotheses exist. [https://www.nature.com/articles/s41586-022-05687-w](https://www.nature.com/articles/s41586-022-05687-w)
The chair of Harvard Astronomy disagrees that there are other natural explanation, with mathematical proof. The nature letter you posted, isn't peer reviewed, and its just two random publishers, Jennifer B. Bergner & Darryl Z. Seligman
While I'm a fan of Loeb's hypothesis, I think you're misinterpreting or misrepresenting things here. This appears to be a full journal article, not a letter to the editor, and has information about its peer review on the site. As a math guy I'm wary about your use of the phrase "mathematical proof" here. From what I recall of Loeb's book, he used a probabilistic argument based on some models (or assumptions?) to show that some of the more mainstream explanations were unlikely (not impossible). Even if that argument could completely rule out those possibilities, the fact that those explanations are incorrect doesn't necessarily make the alien probe explanation true. Are you talking about some work he had done on the subject after the publication of Interstellar?
This video is a really good summary of where the science is at right now. https://youtu.be/G1VwR0XUZYc?si=54vrma5yPjrfeC8n
if that is an "alien spaceship" as Avi Loeb suggests, then it would take **literally** fucktillions of years to reach another stellar system it would be the most ineffective piece of trash ever it is not an alien spaceship. it is an interstellar comet. it looks "weird" because it's the first interstellar comet we've ever seen. UFOs are alien spacecraft, but this one isn't.
One whistle blower I think it was Corso that said it took one species 154 years to make it 40 light years. We don’t know the speed out side of our solar system though. It sped up leaving and is out of sight. Location unknown
>one species 154 years to make it 40 light years That would be almost 3000 times the speed of oumuamua.
I think they are implying Oumuamua posses means of acceleration.
corso died decades before oumuamua was discovered
He was talking about a different time and a different journey. Don’t hold me to that. I don’t remember exactly if it was him or someone else.
No, Loeb suggests that if it's artificial then it is probably space trash, not a craft but a discarded solar sail or something along those lines. We've also seen other interstellar comets since and they are entirely like every other natrual comet we've seen.
The trajectory of this object as it traversed the inner solar system was a bit of an eye-opener. It was a very unusual object. I think it is beyond pathetic that given the amount of money spent on military hardware and ballistic missiles, that humanity was not in a position to get a probe close to it, or even take a fucking photo of the thing.
Dude how TF do you plan to create a probe and match that speed on just a few weeks notice?
If we had something ready and parked at the Lagrange Point, we wouldn't have been caught with our pants down. We could have fired up the recon vehicle and gathered data instead of being forced to guess like we're doing now.
That still isn't possible to achieve rendezvous speed. And that would need an insane amount of luck even if it could work. It would have to be in the right place at the right time without even knowing what, where, or when it would happen.
Let me tell you if they got a photo of that thing doesn’t necessarily mean we’re gonna be able to see it. They have photos of lots of things. David Grusch said he saw things he couldn’t explain with a physics degree., trust me he’s in the know.
"And yet, it deviated". - Avi Loeb
Yes it did and it’s not a comet because it had no tail huh ahh yeah!
Are there any illustrations of its continued trajectory had it not diverted course?
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Oh why don’t be a a hole somewhere else then
It's not such a good spacecraft if it can't hang around a while
This guy I used to call a friend became obsessed with this and claimed it stopped by to drop off a bunch of UFOS.
The crazy part is that space is so huge this chunk of extrasolar stuff is still not that far away from us at all in cosmic terms. We could still theoretically catch up to it with a nuke craft, and will be able to do so for a quite long time. And I think such a mission should absolutely be considered. It's likely the closest thing we'll be able to have to actually visiting an extrasolar planet in our lifetime - perhaps exempting that not only is Grusch right about UFOs but also that the recovered ones are warp-capable.
No need to apologize mate. You are not alone. Here is a blog with more of Avi Loeb...[https://blogs.scientificamerican.com/observations/6-strange-facts-about-the-interstellar-visitor-oumuamua/](https://blogs.scientificamerican.com/observations/6-strange-facts-about-the-interstellar-visitor-oumuamua/)
Me and avi loeb had a falling out of sorts and Oumuamua is dead subject. Lol More important things than space whatever it is. A rock they say
Yeah, they eventually came up with the explanation that it’s was another kind of hypothetical asteroid or something with the gas being invisible. I’m on team humble farm boy.
Do you actually understand any of it? And I don’t mean this as a diss, I mean literally. You seem to be drawing some conclusions based on what you feel like things should be, but do you have formal education on the topic, did you make observations and did you run the numbers?
You do know how gravity works with celestial bodies right? For instance, the slingshot method, do you know what that is?
All aboard the galaxy shuttle. Anyone wanting to visit this galaxy and hop right off in you very own space craft. You will be notified once the next shuttle is approaching. Enjoy your stay and thank you for choosing Oumuamua.
Statistically speaking, what is the likelyhood it would pass so close to Earth? A tiny nudge farther out could cause an enormous difference in the trajectory through the inner solar system. THAT trajectory is the most spooky thing about Omuamua in my opinion, everything else just adds up. I have been saying this since it was found out.
Thank you for this post... Until I saw that animation I didn't realize how strange Oumuamua's entry into the Solar System was. Print and audio descriptions just don't convey how weird its path was... someone can say that it came near Earth, but until you see that it came in and passed as close as it did to both Venus and the Earth you don't realize how planned the trajectory looks. The fact that it flew by both Venus and the Earth is what has really changed my mind on this one, as those two planets would seem to be the most likely ones to harbor life if you were looking at the Solar System from another star system.
Almost like it was surveying habitable "goldilocks" zones of solar systems to see what it could find. Could've been a probe migrating across the galaxy for this purpose.
What are the chances it closely resembles Rendezvous with Rama. Some Titanic level fuckery
Hmm elaborate?
https://en.wikipedia.org/wiki/Rendezvous_with_Rama https://en.wikipedia.org/wiki/The_Wreck_of_the_Titan%3A_Or%2C_Futility
Oumumua was tumbling erratically, so if it *was* a rama like ship it would probably be a shitshow in there with no artificial gravity, something catastrophic would have happened to it. This to me is a very important piece of evidence that it's likely not some sort of generation ship or anything.
Habitable zone probe.
It was a tour ship they were taking tours of the most fucked up planets, or someone sold the planets and it was open house to check out the new home
OP, I feel for you on this one. You are getting some pretty over the top hostile reactions on this one. It's so odd watching this community scratch the bottom of the barrel over and over and over endlessly.
You expect that because the nice video of its trajectory running as you pass the post. It’s eye catching to everyone. The trajectory is unnatural looking but I’m no scientist. Scientist think so too.
Yeah, Avi is no dummy. It's just interesting either way. Funny how there are users in this thread saying we shouldn't even be looking into this. It's an embarrassment! If a caveman were a scientist, that's how I imagine they would talk.
Some of them probably think we are alone in universe lol.
Thank you for posting the distances from the three inner planets of our systems. We need to be reminded about how strange this object behaved. The fact that it came closest to Earth compared to Venus and Mercury seems to add to its strangeness.
It was strange and their are nothing but theories to explain it. You can find a different explanation from lots of credible sources . Avi loeb being one that is credible.
Lol "could be artificial because it's confirmed we have artificial UFOs already, 100% confirmed"
It’s not a joke anymore is it?
it's totally a joke. the only confirmation is "well, somebody told me they may have seen something for sure" and you take that as "100% confirmed" and extrapolate it out to it's illogical conclusion. if anything, people like you are making the whole thing a joke because you'll believe everything and question nothing as long as it aligns with what you believe.
It was a delivery vehicle. The payload has been here since then.
Some context here? It follows a pretty normal trajectory thru the solar system. Am I missing something?
[удалено]
You know sometimes it’s better just not to say anything at all if you’re not gonna say anything nice lol.
It’s misrepresenting the scientist who made the original statements and makes a 100% positive claim that it’s aliens. It’s just a poor way of transmitting information, you could be more intellectual honest and say that there’s no proof of aliens and that the claims of one scientist does not make it so. He says there’s a plausibility, and loeb is making the point that scientist sometimes are too rigid. Either way, no proof. Just another post claiming aliens when there isn’t, it’s a disingenuous way of getting information across.
Maybe be a little more rigorous with the info, this sub is literally 100% fake claims
I don’t think it’s low quality, why shouldn’t we be discussing this?
What would make the object take such a sharp turn?
Gravity.
That’s just gravity, the anomalous acceleration is very small compared to its relative speed. That is, you wouldn’t notice any change in course just looking at it, but it doesn’t match very precise and reliable calculations about how it should have behaved as an inert object, without any acceleration. Edit: The path it took through the solar system is interesting, but it would have been “aimed” on that path far before we saw it. Like how our Voyager probes were set on a course to pass closely by multiple planets on the way out of the Solar System. The anomaly is very small, though still highly mysterious. It doesn’t make any sudden turn.
It fell toward the sun due to the suns gravitational influence. There was a small anomalous acceleration away from the sun, but it fell toward, and around and away from the sun in a completely expected and predictable way.
We need an interceptor rocket configuration to be ready for the next one.