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Big crater seen beneath ice sheet


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What appears to be a 480km-wide (300 miles) crater has been detected under the East Antarctic Ice Sheet.

The scientists behind the discovery say it could have been made by a massive meteorite strike 250 million years ago.

The feature at Wilkes Land was found by Nasa satellites that are mapping subtle differences in the Earth's gravity.

http://news.bbc.co.uk/1/hi/sci/tech/5045024.stm

:D

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