And that's how it was from the Big Bang to the Moon.
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Quadrillian say: An almost impossible collision at just the right angle and velocity to blow off much of the Earth's atmosphere and crust. The debris formed the moon. The Earth then settled down to support the unique lithosphere, atmosphere and bioshere that it ha today.
Nothing to do with the big bang, which happened about ten billion years before the impact(s) that formed the moon.
Cheers!
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someg say: It is like an annoying puppy dog that keeps running around the feet of the Earth.
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poldi say: The moon was formed 4.5 billion years ago, from the debris after a collision between the forming Earth and a large planetesimal.
The Big Bang has nothing to do with the formation of the moon, the Big Bang was the sudden expansion of the universe 14 billion years ago.
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Iridflare say: The big bang theory has no bearing on the creation of specific bodies such as the moon.
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say: That's no moon.
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quantumclaustrophobe say: The moon is thought to have resulted from an impact on the early Earth from a Mars-sized object. The impact was a glancing blow, ejecting tons of material into orbit about the Earth, while at the same time knocking our axis 23.5 degrees from our orbital plane, and giving us a very short day - as little as 6 hours.
The debris in orbit collected to form the moon in a relatively short period - a few hundred thousand years, and much closer to where we know it to reside today.
Over time, the tidal effects of the moon lengthened our day to the 24 hour period we know now, and boosted the moon's orbit to about 238,000 miles. (It continue to moves away to this day.)
The Big Bang doesn't have much to do with the moon other than being the original source of matter for it.
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Nyx say: http://www.skyandtelescope.com/astronomy...
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PeterPiper say: Why? Ever used Google? You don't need password.
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