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An asteroid travelling at 23,000mph could crash into Earth on April 13, 2036 killing millions and causing global chaos, scientists claim.
In a plotline taken straight from a science-fiction film, astronomers in Russia are predicting that the 300-yard-wide Apophis could slam into the planet in 25 years' time.
But don't panic just yet, as it is extremely unlikely to happen.
So unlikely, in fact, that Nasa has given the catastrophic event odds of 250,000-to-1 that it actually takes place.
First, the comet must pass through a narrow gravitational keyhole - a small region in space that can alter the course of a passing asteroid due to Earth's gravity - in April 2029 before it can be on course to collide seven years later.
http://www.dailymail.co.uk/sciencete...tists-say.html
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