I thought the theory that the earth was formed when a Mars sized planetoid collided with the earth was the accepted one now? That it gave the earth it's current rotation speed, and explained why rock on the moon was the same as the earth...

Short, sweet, good to watch & to the point.

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>> ^TheSluiceGate:

I thought the theory that the earth was formed when a Mars sized planetoid collided with the earth was the accepted one now? That it gave the earth it's current rotation speed, and explained why rock on the moon was the same as the earth...


That isn't in question, that event happened 4.5+ billion years ago, this takes place after that. This is the history of it after its formation.

Ah yeah, now that makes sense.

Wasn't there also a theory that the moon collided with second smaller moon early in its formation and that accounts for the difference in geology on the different sides of the moon.

Very nice

During a discussion on how long ago the dinosaurs lived someone made a great comment: we (people) really can't get our heads around how long ago 200-300 million years really is. A billion years? Forget about it.

WELCOME TO MY MOONBASE.

>> ^Jinx:

Wasn't there also a theory that the moon collided with second smaller moon early in its formation and that accounts for the difference in geology on the different sides of the moon.


They are launching a prove probe to investigate that hypothesis, but it can't really be called a theory at this point. It is purely based in mind stuff, not evidence at this point.

Man, the moon really has gone through a lot of crap.

If moon evolved from monkeys, why do we still have monkeys?