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Black hole collision may have irradiated Earth in eighth century


               
2013 Jan 21, 7:38am   418 views  0 comments

by Thedaytoday   follow (0)  

Black hole collision may have irradiated Earth in eighth century
A powerful gamma ray burst caused by a collision of two black holes or neutron stars may have irradiated the Earth in the eighth century, researchers claim.

http://www.telegraph.co.uk/science/space/9816219/Black-hole-collision-may-have-irradiated-Earth-in-eighth-century.html

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