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Don't you know about theYou must be registered for see links? The current prevailing theory about the formation of the early earth and its moon? According to it, Earth was hit by an object way larger than the moon (twice, actually, in the computer simulations). And we still have an earth.
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Right now, the evidence (most compelling?) that supports the theory is the lighter-density of the moon and its relatively small iron core, which suggests that the moon was created by the outer layers of the earth that were stripped into orbit by the impact of an object the size of Mars. Rather than the moon having been formed at the same time as the earth, or the moon being a captured object.
Whether or not it really happened, the computer simulations don't exactly show something the size of earth busting into a bunch of pieces even if it's hit by something bigger than the moon.
What would count as terminal velocity to a moon? Do you know what terminal velocity is? I'm thinking the moon doesn't care about terminal velocity, the atmosphere doesn't have a chance when it hits. Terminal velocity doesn't even apply, it would be like, "**** you atmosphere!" and vaporize it.
that theory applied to an earth that was still forming. i know of it. but if the moon crashed into the earth at a good speed then its good by earth! earth would be in large pieces destroyed!