The asteroid, called 2010 TK7. LOL.
Astronomers have spotted a huge lump of rock that hurtles throughspace ahead of the Earth in its orbit around the sun.
The rock, which is 300 metres across, is known as a "Trojan asteroid" because it shares Earth's orbit but remains far enough away it will never collide with the planet.
http://www.guardian.co.uk/science/2011/jul/27/trojan-asteroid-earth-orbits-sun
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