Asteroid Fly-By!

Today Emily Graslie of The Brain Scoop gives us the news about a couple of near- misses for our planet and an update on where astronomers think habitable life might be found in other star systems.

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References:
http://www.nasa.gov/multimedia/videog...
http://www.nasa.gov/images/content/16...
http://www.nasa.gov/images/content/72...

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