Asteroids to Watch Out For

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from SciShow

Hank tells us about NASA's Near-Earth Object Program, which tracks the paths of asteroids and categorizes them according to the likelihood that they will strike the Earth at some point in the future. Like SciShow on Facebook: Follow SciShow on Twitter: References: near-earth object, NASA, asteroid, rank, risk, apophis, mn4, asteroid tracking, earth, astronomy, astronomer, astrophysics, astrophysicist, keyhole, 1950 DA, impact probability, planet, planetary, impact, scishow, science, hank green