I kind of know how a planet forms, but i don't really know the main things about it, you know what i mean? I just wanna know all the elements that make the planet, and how they get together to make it. Thanks guys, I'm just curious. I love astronomy :D ..
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According to the Nebular Hypothesis first formulated by Emanual Swedenborg in 1734, the planets evolve as do stars, through a process of accretion. Starting out as a huge cloud of mainly hydrogen and helium in galactic space, a solar system contracts under the action of mutual gravity. Whatever is in the cloud is what creates the sun and later the planets; early on it is almost exclusively hydrogen and helium, but later on it includes the heavier elements spewed back into space by planetary nebulae, novas and supernovas of various kinds.
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Nothing is more specific and detailed than websites discussing the topic.
Of course, people can search for these sites themselves, but that would just be too hard.
http://en.wikipedia.org/wiki/Nebular_hyp…
http://en.wikipedia.org/wiki/Formation_a…
Of course, people can search for these sites themselves, but that would just be too hard.
http://en.wikipedia.org/wiki/Nebular_hyp…
http://en.wikipedia.org/wiki/Formation_a…
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It's a gravity deal.