A question about gas planets?

Question

I was wandering if the gas planets form the same way as the rock planets, i understand how rocks come together to form planets but since they're gas .. now that its big gravitation should pull it together but during the initial stage how did the gas manage to come together?

Answer 1

The gas is simply trapped by the gravity of the rocky core, and subsequently by the gravity of the gas alread in place. The reason smaller rocky planets don't have such thick atmospheres is because their lower gravity couldn't hold thick atmospheres down as well, and particles from the Sun tend to blow the gas away. They also have less powerful magnetic fields to protect against those same solar particles.

Answer 2

In the beginning of our solar system, it looked much like a small galaxy of rock, dust and gas, spinning around a young sun. This rotation lasted a long time, during which the different kinds of materials separated and drifted into different "rings" of the spinning disk, because they have different masses and densities.So there were areas around the sun in which were more gas, more rock, more ore and so on. Then, after allot of this spinning, the planets formed them self  on their different circles around the sun, absorbing material in their way, which were relatively of the same material. Now guess what, you can tell where the different rings were, by looking at the solar system now. Have fun

p.s.: of course, gas just need its own gravity to form planets, just like solid materials do.

Answer 3

I am not sure how the gas planets actually formed but I can tell you that everyone has a "core" made out of solid material. These cores are probably made out of some type of rock & even though they are not very big in size, every gas planet has one. This has been proven using know laws of Gravity but I am sorry I cant answer your question about how they were formed & I must admit I never thought about it before. You have asked a "very" interesting question & I hope someone else can contribute more to help solve your question.

Cheers !