Black holes

ESA black hole planet COSMOS Science Magazine

Black hole awakens for planet-sized snack

Wednesday, 3 April 2013

A black hole has been observed awakening from its slumber to consume a planet-sized object in a galaxy 47 million light years away, according to astrophysicists who witnessed the rare event.

Gamma-ray burst blasted Earth in 8th century_COSMOS science magazine

Gamma-ray burst blasted Earth in 8th century

Monday, 21 January 2013 - 1 comment

A mystery wave of cosmic radiation that smashed into Earth in the eighth century may have come from two black holes that collided, according to a new study.

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