Astronomers detect cries of a dying star

For the first time astronomers have detected the last gasps of a star being torn apart by a previously dormant giant black hole.

The signals, which came from a galaxy 3.9 billion light years away, were x-rays generated by matter heated to millions of degrees and torn apart as material from the star crosses the black hole's event horizon.

Known as quasi-periodic oscillations, they are a characteristic feature of stellar black holes, which have about 10 times the mass of the Sun.

Dr Rubens Reis from the University of Michigan is the...

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