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The day it rained fire over Chelyabinsk

Two years ago, on February 15th, the morning routine of the Chelyabinsk region in Russia was shattered by the arrival of a 20-metre-wide meteoroid that dramatically fragmented in the atmosphere. The ensuing shockwave shattered windows, damaged buildings and 1,491 people received injuries. What have we learned since 2013?

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How to prevent another Chelyabinsk

The Chelyabinsk event two years ago heightened public awareness of the threat posed to humanity by an asteroid strike, but what can be done to prevent it happening again? The forthcoming Sentinel Space Telescope and ATLAS Project will hopefully prevent us being caught off guard.