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In 2004, scientists discovered an asteroid, and they named it 99942 Apophis. In February 2013, Russia experienced the destruction of a meteor exploding in the Earth's atmosphere. At one time it was believed that there was a chance (albeit, less than 3%) that 99942 Apophis might similarly collide with the planet. But before you start digging a bunker in your backyard, it is no longer believed that Apophis is a legitimate threat.

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