- #36
cepheid
Staff Emeritus
Science Advisor
Gold Member
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Drakkith said:That's what I'm guessing, like my own post said.
Yeah I think the post of yours that you refer to had the right idea. Better to talk about the "beginning." I think the conventional model is that you can think of Earth as having formed from some initial "clump" or overdensity in the protoplanetary disk, and that that clump had some initial angular momentum (it was spinning -- all of it). Higher density things settled toward the centre and lower density things stayed on top, but basically all of it was spinning (both what we now call atmosphere and the solid part) since the beginning.
What do you guys think?