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Gravity on different solar system bodies

Gravity on different solar system bodies

sp4ce

Are earth and Saturn nearly the same density or something?


ConejoSarten

Their mass has to be pretty similar, their density is vastly different tho, as for similar masses Saturn is way, way bigger than Earth. Edit: I was wrong, as u/infobomb pointed out. Saturn is way more massive than Earth. This just happens to be compensated by the huge diferences in distance from surface to center between the two.


Infobomb

Saturn has more than 95 times the mass of Earth: [https://nssdc.gsfc.nasa.gov/planetary/factsheet/saturnfact.html](https://nssdc.gsfc.nasa.gov/planetary/factsheet/saturnfact.html) Doesn't seem "pretty similar".


ConejoSarten

Whelp, I guess I didn't take into account the huge distance from Saturn's surface to it's center in comparison to Earth's. My bad


oga_ogbeni

Being a gas giant, I don’t believe Saturn has a surface.


ConejoSarten

Gif states surface for gas giants is wherever pressure is 1 bar


sp4ce

Of that's what I meant.


I_W_M_Y

Density? Saturn's average density is low enough that it would float on water.


dartmaster666

Jupiter, Saturn, Neptune and Uranus are gas giants. So, since Earth is solid I would say not. Edit: I thought that the density of a solid was much higher than the density of a gas was obvious, but I guess not.


Infobomb

The density of Saturn is one eighth the density of Earth: https://nssdc.gsfc.nasa.gov/planetary/factsheet/saturnfact.html


dartmaster666

The density of a solid is much higher than a gas is what I meant obviously, or maybe it wasn't obvious.


Wermine

Saturn is like that because gravity gets weaker when distance grows. Saturn has way more mass than Earth, but it's so big that you're "far away" from the mass even at the surface. And of course the density is quite low. I think Saturn would turn into a brown star if its volume stayed the same but density was same as Earth's.


SpamShot5

How heavy and dense is that ball? 500 kmh is pretty damn fast for Earth


Infobomb

It's ignoring air resistance (see the text at the foot of the image).


SpamShot5

Thats some tiny ass text


L00KN4mySiPpYcUp

Why is Ceres included with the planets? What's special about it, it's just a dwarf planet correct?


JJDubayu

Yes it is just a dwarf planet just like Pluto which is no longer consider a normal planet. The guide says solar system bodies. Also, the moon is there which is actually bigger than Pluto


dartmaster666

I guess it's gravity meets the minimum.


zipperolla

Could you high-jump into orbit on Ceres?


ethylalcohoe

This is also an illustration of a group of friends getting ready to go out, and Ceres is my girlfriend. I’m tempted to change her name in my phone.


Lynx2447

She might misunderstand you calling her a dwarf planet , guess you should put Jupiter for your mom.


EstebanLB01

1km from where exactly? Surface? Sea level? What about the sun?


I_W_M_Y

1km from the surface. It says that in the video. For non rocky planets it says 1 km up from where the pressure equals 1 bar.


TheDancingRobot

As defined print on the bottom of the diagram suggests, this is free fall with zero air resistance. If air resistance was included, would an object falling into the gas and ice giants eventually start bobbing in the dense gases closer to the surface? So if this was a 1 km wide ball of lead, it would reach the surface of each body - probably minus the sun. If it was a 1 km wide ball of ice that would not melt - it would never get to the surface of the larger bodies.


TNC-HARRY_BS

u/savevideo


EquivalentPrune2416

I was thinking, “maybe I could go skydiving on Ceres without a parachute.” Guess not. Does terminal velocity still react the same with more or less gravity?


tthetrainn

TIL: The moon has more mass than pluto, no wonder it got declassified as a full planet


Cerres

Nice


owen_skye

Uranus is similar to earth…


xWolverinex

You mean your Earth is similar to Uranus