Asteroid 2012 TC4 is set to whizz dangerously close to our planet for the second time after the space rock narrowly missed Earth in October 2012.
Astronomers estimate 2012 TC4 could be as large as 40m wide - just under the height of New York's famous Statue of Liberty from her feet to the tip of the torch.
This is twice the size of the meteor that exploded over the Russian city of Chelyabinsk in February 2013, which injured 1,500 people and damaged more than 7,000 buildings.
The impact of the larger 2012 TC4 asteroid, predicted to near Earth on October 12 2017, could be even more devastating.
And, worryingly, experts cannot yet predict where in the world it will strike.
Dr Judit Györgyey-Ries, astronomer at the University of Texas' McDonald Observatory, told space blog astrowatch.net: "We could see an airburst maybe broken windows, depending on where it hits."
The giant asteroid was discovered on October 4, 2012 by a Hawaiian observatory and a week later narrowly missed Earth when it passed 94,800km away.
http://www.express.co.uk/news/world/570239/Asteroid-collision-course-earth
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