2006-10-02 22:04:13 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Mercury has the least gravitational mass, but experiences by far the most gravitational force from the sun. So I would say Mercury or Neptune, depending on what you mean by your question. Before Pluto was demoted, it would be the winner by either standard.
2006-10-02 22:42:32 · answer #1 · answered by Frank N 7 · 1⤊ 0⤋
Saturn is the least dense of the planets; its specific gravity (0.7) is less than that of water.
Like Jupiter, Saturn is about 75% hydrogen and 25% helium with traces of water, methane, ammonia and "rock", similar to the composition of the primordial Solar Nebula from which the solar system was formed.
Saturn's interior is similar to Jupiter's consisting of a rocky core, a liquid metallic hydrogen layer and a molecular hydrogen layer. Traces of various ices are also present.
2006-10-03 05:26:09 · answer #2 · answered by rajesh e 1 · 0⤊ 0⤋
Mercury I believe is now the smallest, since Pluto is no longer a 'planet'. Although denser than the gas giants, to my knowledge, it still contains the least mass of any planet.
2006-10-03 05:06:33 · answer #3 · answered by Jonny Jo 3 · 0⤊ 0⤋
I don't think anyone really knows for sure about the planets, much less details like gravity (in fact, no one is sure exactly what gravity is). But, assuming there are planets, and that they have gravity, what difference does it make, you will not be going there. Need to focus on more practical matters.
2006-10-03 05:07:49 · answer #4 · answered by victorschool1 5 · 1⤊ 1⤋
It used to be Pluto when it was a planet, now it is Mercury.
2006-10-03 05:07:47 · answer #5 · answered by FrogDog 4 · 0⤊ 0⤋
The one with the least mass.
2006-10-03 05:05:45 · answer #6 · answered by excel 2 · 1⤊ 0⤋
mercury
2006-10-03 05:06:58 · answer #7 · answered by shelly 2 · 0⤊ 0⤋
uranus, because it expells gas at a high rate.
2006-10-03 05:06:31 · answer #8 · answered by bsc504 3 · 1⤊ 1⤋