This is a pretty neat animated recreation of the origin of the moon from the History.com people.
My question is: where did the big boulders come from? I mean I can see how the aggregation of lots of cosmic dust and whatever can eventually create enough mass and pressure to coalesce into a moon or planet, but I don't see it producing mere boulders.
Anyway, here's the link to the graphic
http://www.history.com/shows/the-universe/videos/creation-of-the-moon
My question is: where did the big boulders come from? I mean I can see how the aggregation of lots of cosmic dust and whatever can eventually create enough mass and pressure to coalesce into a moon or planet, but I don't see it producing mere boulders.
Anyway, here's the link to the graphic
http://www.history.com/shows/the-universe/videos/creation-of-the-moon