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Above asteroid 2012 DA14 as it flew past Earth.
NASA reports that asteroid 2012 DA14 on Friday Feb. 15 flew through the Earth's Geosynchronous Zone where communications and weather satellites orbit and at 2:25PM ET/11:25am PT to come within 17,200 miles of our planet. NASA says the asteroid is about 150-feet across and was traveling at 17,400 mph. NASA's NEO Program Office predicted it had no chance of hitting the Earth and almost no chance of hitting a weather or communications satellite as it bounces off our atmosphere.
If 2012 DA14 were to hit Earth, the impact would release about 2.5 megatons of energy, causing major devastation, say NASA scientists.
This asteroid was discovered in 2012, by the La Sagra Sky Survey which is operated by the Astronomical Observatory of Mallorca in Spain, when it was about 2.7 million miles away from Earth. Asteroids of this size have been known to strike Earth about every 1,200 years.
In this gallery, we'll look at ways we are studying asteroids and preparing for the worst. Our dear friend, the late Roland Piquepaille, prepared us to save the world with 50 ways to kill an asteroid.