Are We Prepared for a Large Asteroid Impact?

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Artist’s concept of a near-Earth object. Image credit: NASA/JPL-Caltech

 

 

On December 16, 2017 at about 5:00 PM CST, the asteroid 3200 Phaethon passed within 64 million miles of Earth...read more

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This spinning moon shows where debris from giant impacts fell
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Mars impact crater or supervolcano?