In space, if I have a small planet made out of some kind of metal(solid to the core), and a larger planet made out of sponge(porous to the core), would the larger object have more gravity because of it's size, or would their gravity be similar? The same can be applied to the idea of a marble versus a sponge I guess.
Does the density of an object affect the gravity it produces more than it's size, or is size the best measure of gravity forces?
PS: The sponge planet would not collapse and become denser, because it's a theoretical sponge planet.
2007-03-26
02:16:56
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8 answers
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asked by
Luis
6