What will destroy planet earth?

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Killing all the life on Earth is easy. But what about destroying the planet itself? That is DEFINITELY going to happen!! But HOW? Could it be Nukes? A Giant Asteroid? A Collision with another planet? And what’s more, will anyone be around to actually watch the world reach its ultimate demise? Watch this week’s episode of Space Time to find out what will eliminate Planet Earth!!!

Extra Credit:
Simulation showing possible collisions with Mars:
http://www.ncbi.nlm.nih.gov/pubmed/19516336

Vaporization of Earth by the Sun:
http://iopscience.iop.org/0004-637X/755/1/41/

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Comments:
Viridis Arborem
https://www.youtube.com/watch?v=gJ5KV3rzuag&lc=z13uyb25dnqaz33jy04cdnl4gvndujgohqg0k

Katherine Daniel
https://www.youtube.com/watch?v=gJ5KV3rzuag&google_comment_id=z125hxzi2lilxbxas04cd1egrmebw5fopu00k

Zevin X
https://www.youtube.com/watch?v=gJ5KV3rzuag&google_comment_id=z12xhvxaqqvfyzf3x23ev3qjdzjlyj0x004

James Roach
https://www.youtube.com/watch?v=gJ5KV3rzuag&google_comment_id=z13fsdyp2vu3jhahj04cgx3gouzwclyw2j0

Justin Stein
https://www.youtube.com/watch?v=gJ5KV3rzuag&google_comment_id=z12owtm5hrjscfkut23nyj0zsnunv5rbm04

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