Asteroid spotted on collision course with Earth

On January 1st, around 1:30 in the morning, astronomers spotted an asteroid heading straight for Earth. The good news is that it was probably only between 6.5 and 14 feet long. In fact, the International Astronomical Union says that the asteroid — 2014 AA — has most likely already hit us and burned up in the atmosphere. But here's the cool part: This is just the second time in history that we've spotted an asteroid before it hit us.

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