Lindley Johnson: NASA office tracks possible earth-striking objects

Lindley Johnson, Planetary Defense Coordination Office, NASA

It might be a small risk, but if it happened, nobody would like it much. An asteroid hitting the earth, if it were big enough, could deliver untold damage and loss of life. You might be surprised how many potential earth-striking objects are out there. Now NASA has re-organized its efforts to track near-earth objects. Lindley Johnson, who leads the Planetary Defense Coordination Office, provides insight for Federal Drive with Tom Temin.

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