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Asked by weirdboblet to Carol, Ellie, John, Philip, Rebecca on 28 Jun 2012.
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Carol White answered on 28 Jun 2012:
Some of the planets in our solar system have a very similar gravity to Earth! If you were to stand on the surface of any planet, the “gravity” is calculated from the planet’s mass and the radius of the planet. So some small planets will have low gravity, and some really dense ones will have high gravity – it’s a combination of both. On Jupiter, the gravitation pull is 2.5 times that we have here!
Ever wondered how much you’d weigh on the other planets…?
http://www.exploratorium.edu/ronh/weight/
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John Welford answered on 28 Jun 2012:
Like Carol says, anything with mass has gravity, the force felt between two objects depends on their masses and how far apart they are.
It’s weird to think about the gravity of small objects because the force is so weak, also big objects that are really far away like the sun don’t exert much force on objects the size of us. But the earth is big enough that gravity forces it towards the sun, luckily we are in orbit around it so we don’t actually get sucked in!
So everything has gravity and you would feel it if you were on a different planet, but we’re far enough away that we don’t notice the gravitational pull of other planets when we’re on earth.
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