A new study shows the star, called T Pyxidis, is much closer than previously thought at 3,260 light-years away - a short hop in galactic terms. It is set to self-destruct in an explosion called a supernova with the force of 20 billion billion billion megatons of TNT.
The blast from the thermonuclear explosion could strip away the Earth's ozone layer that keeps out deadly space radiation, scientists said.
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For more : Sky News: Supernova Star Blast 'Could Wipe Out Earth'
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