Did 'white dwarf hypernova' star explosion wipe out all alien life?
But now some astronomers claim that a destructive force of exploding stars could have simply wiped out ET, reports the Daily Mail.
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.
Edward Sion from Villanova University in Pennsylvania told the Daily Galaxy that it was possible that this could occur 'soon' on the timescales familiar to astronomers.
But he conceded that such an event was very unlikely to occur in the next few hundred years.
Hypernovas are essentially giant supernovas, or exploding stars.
Until the 1990s, hypernovas were classified as such only if they had the energy of 100 supernovas.
Today, they are considered as the explosion of all hypergiants, or stars with a mass of between 100 and 300 times that of the sun. (ANI)
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|Publication:||Asian News International|
|Date:||Mar 24, 2011|
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