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The lack of evidence proving the existence of aliens is known to scientists as the ‘Great Silence’. They have long been baffled how- despite years of searching – there has been no confirmation of life beyond our planet. But now some astronomers believe the answer may lie in the destructive force of exploding stars – and claim ET may simply have been wiped out.
In particular, a phenomenon known as a white dwarf hypernova could have sucked alien life into a black hole. And because this process – when an exceptionally large white dwarf star, a collapsed remnant of an elderly star, becomes unstable and explodes – has occurred several times over millions of years, it is possible that life may have wiped out more than once. Scientists also believe there is possibility we on Earth too could be wiped out by the process of gamma ray bursts. Intense gamma radiation produces of nitrous oxides that could perhaps destroy the ozone layer.
Dr Edward Sion, from Villanova University in Pennsylvania, told the Daily Galaxy that it is possible that this could occur 'soon' on the timescales familiar to astronomers.
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