Diraker
03-03-2009, 01:56 PM
http://news.bbc.co.uk/2/hi/science/nature/7921279.stm
An asteroid which may be as big as a ten-storey building has passed close by the Earth, astronomers say.
The object, known as 2009 DD45, thought to be 21-47m (68-152ft) across, raced by our planet at 1344 GMT on Monday.
The gap was just 72,000 km (44,750 miles); a fifth of the distance between our planet and the Moon.
It is in the same size range as a rock which exploded over Siberia in 1908 with the force of 1,000 atomic bombs
...
It would probably hit an ocean which would mean a huge tidal wave.
An asteroid which may be as big as a ten-storey building has passed close by the Earth, astronomers say.
The object, known as 2009 DD45, thought to be 21-47m (68-152ft) across, raced by our planet at 1344 GMT on Monday.
The gap was just 72,000 km (44,750 miles); a fifth of the distance between our planet and the Moon.
It is in the same size range as a rock which exploded over Siberia in 1908 with the force of 1,000 atomic bombs
...
It would probably hit an ocean which would mean a huge tidal wave.