When a meteorite exploded over the Russian town of Chelyabinsk, the wave of pressure shattered windows and turned some buildings to rubble. Now it's one day on and the town's clean-up operation is underway.
Asteroid 2012 TC4 will pass mighty close by our planet this Thursday. A direct hit would cause untold destruction. So, are we really prepared for such an event?
As a humble Earth-bound species, humanity has been lucky enough to avoid major asteroid collisions. As we take our first steps into space, scientists are working on ways to protect Earth – before our luck runs out.
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