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Go Back   The Trek BBS > Entertainment & Interests > Science and Technology

Science and Technology "Somewhere, something incredible is waiting to be known." - Carl Sagan.

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Old April 12 2014, 04:58 PM   #1
varek
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Location: Danville, IN, USA
asteroid huge in earth's history

This ancient asteroid allegedly created the Earth's crustal tectonic plates, 3.5 billion years ago!

http://mysteriousuniverse.org/2014/0...ped-our-world/
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Old April 12 2014, 06:00 PM   #2
publiusr
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Re: asteroid huge in earth's history

That looks to have been the largest since Theia...
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Old April 12 2014, 10:04 PM   #3
JarodRussell
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Re: asteroid huge in earth's history

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Old April 13 2014, 01:16 PM   #4
varek
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Re: asteroid huge in earth's history

Here's an interesting alternative to the Theia collision:


http://www.nasa.gov/topics/solarsyst...formation.html

In it, two large bodies collided, and the leftover debris became the Moon!
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Old April 14 2014, 02:15 AM   #5
Dryson
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Re: asteroid huge in earth's history

varek wrote: View Post
Here's an interesting alternative to the Theia collision:


http://www.nasa.gov/topics/solarsyst...formation.html

In it, two large bodies collided, and the leftover debris became the Moon!
Interesting theory Varek. The theory would explain the reason why there is not an atmosphere on the Moon given the fact if the Moon came from a collision with Earth then there should have been enough spin to keep the Moons core active an supporting life.

Last edited by Dryson; April 14 2014 at 02:33 AM.
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Old April 14 2014, 11:47 PM   #6
publiusr
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Re: asteroid huge in earth's history

A double planet would have been nice.
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