Doomed twin stars found at nebula's heart

February 9, 2015 7:41 PM

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Doomed twin stars found at nebula's heart

At the centre of a mysterious nebula, astronomers have discovered two stars locked in such a tight orbit that they will eventually merge and explode.

To reignite and explode into a supernova, a white dwarf must gain mass, either by grabbing matter from a partner star, or by fusing with it (if the partner is also a white dwarf).

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