2006-11-09 08:26:48 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
They have solids cores. Other than that the are mostly gas, due to the distance from the suns gravity. When our solar system was formed most of the "heavier" elements stayed close to the major gravity pull, the sun. once out any other heavy elements that made it out that far condensed to gether to form cores. Now; the farther away from the sun you go the coder it gets. Now the gases that are out that far basically freeze and get "solid". hope this helps!!
By the way- ALL planets need a core. even though it might not be of same rocky material as other planets (Jupiter, saturn)..think of my explaination above. If none of the solids came out that far out, they could get together to form a core, but something has to be in the center of a planet.
2006-11-09 08:34:53 · answer #1 · answered by nor2006 3 · 0⤊ 0⤋
The Jovian planets h ave no solid surface, but they do have a solid core. Kinda like my ex-wife. She was soft on the ouside, but hard as iron in the core.
2006-11-13 16:27:02 · answer #2 · answered by gleemonex69 3 · 0⤊ 0⤋
The Jovian planets include Jupiter, Saturn, Uranus, and Neptune.
Unlike the rocky planets, Jupiter is a ball of dense hydrogen, helium, water, nitrogen and other gases over a tiny rocky core.
The structure and Saturn is fundamentally identical to the structure of Jupiter, although the liquid metallic hydrogen region is not as large in radius as that same region on Jupiter.
Uranus is smaller than either Saturn or Jupiter. Its structure is similar but not identical. It has a rocky core and a liquid mantle, but the liquid mantle is water and not liquid metallic hydrogen. Surrounding this water mantle is an atmosphere of hydrogen and helium.
Neptune is smaller tstill. Its structure is closer to Uranus, with a rocky core and a liquid mantle of water and not liquid metallic hydrogen. Surrounding this water mantle is an atmosphere of hydrogen and helium.
2006-11-09 17:38:25 · answer #3 · answered by CanTexan 6 · 0⤊ 0⤋
At a Certain point, the atm. pressure reaches over 1.0x10^6 times the pressure here(earth's atmospheric pressure), the hydrogen becomes a metallic superfluid,and at that pressure, i would theorize that it would be like a solid surface if we ever became able to perceive it.
2006-11-09 17:27:31 · answer #4 · answered by Twitch 2 · 0⤊ 0⤋
I don't think Uranus has any solid core, but Jupiter, Saturn and Neptune do.
2006-11-09 16:36:22 · answer #5 · answered by campbelp2002 7 · 0⤊ 0⤋
They have a solid core.
2006-11-09 16:28:59 · answer #6 · answered by Miss Anthrope 6 · 0⤊ 0⤋