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OK folks <a href="http://news.bbc.co.uk/1/hi/sci/tech/2147879.stm">we got 17 years left</a>, make the most of it.
An asteroid discovered just weeks ago has become the most threatening object yet detected in space.
A preliminary orbit suggests that 2002 NT7 is on an impact course with Earth and could strike the planet on 1 February, 2019 - although the uncertainties are large.
Astronomers have given the object a rating on the so-called Palermo technical scale of threat of 0.06, making NT7 the first object to be given a positive value.
From its brightness, astronomers estimate it is about two kilometres wide, large enough to cause continent-wide devastation on Earth.
An asteroid discovered just weeks ago has become the most threatening object yet detected in space.
A preliminary orbit suggests that 2002 NT7 is on an impact course with Earth and could strike the planet on 1 February, 2019 - although the uncertainties are large.
Astronomers have given the object a rating on the so-called Palermo technical scale of threat of 0.06, making NT7 the first object to be given a positive value.
From its brightness, astronomers estimate it is about two kilometres wide, large enough to cause continent-wide devastation on Earth.
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