BBC E-mail: Dinosaur-killing rock 'was a comet'

I saw this story on the BBC News iPad App and thought you should see it.



** Dinosaur-killing rock 'was a comet' **
The space rock that hit Earth 65 million years ago, widely implicated in killing off the dinosaurs, was probably a fast-moving comet, researchers say.
< http://www.bbc.co.uk/news/science-environment-21709229 >


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