dinosaurs (1)

Dinosaur-killing space rock 'was a comet'

 

Reblogged from World Chaos:

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The space rock that hit Earth 65m years ago and is widely implicated in the end of the dinosaurs was probably a speeding comet, US scientists say. Researchers in New Hampshire suggest the 180km-wide Chicxulub crater in Mexico was carved out by a smaller object than previously thought. Many scientists consider a large and relatively slow moving asteroid to have been the likely culprit.Details were outlined at the 

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