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How to defend Earth from asteroids
2,473,389 views |
Phil Plait |
TEDxBoulder 2011
• September 2011
Read transcript
What's six miles wide and can end civilization in an instant? An asteroid -- and there are lots of them out there. With humor and great visuals, Phil Plait shows us all the ways asteroids can kill us (yipes), and what we must do to avoid them.
science
technology
astronomy
space
dinosaurs
TEDx
asteroid
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