Nebula hypothesis
This is an old revision of this page, as edited by Hanfan1 (talk | contribs) at 22:41, July 3, 2008. It may differ significantly from current revision.
The nebula hypothesis (alternately, nebular hypothesis) is model of the formation of a solar system. It theorizes that a solar system begins as a rotating cloud of gas and dust that contracts to create a flat disk with a star at its center. Planets grow from the particles surrounding the star, creating a solar system.