Friday, August 12, 2016

Complex life may be possible in only 10% of all galaxies

Summary: 10 billion galaxies can support complex life

Source: Science

Of the estimated 100 billion galaxies in the observable universe, only one in 10 can support complex life like that on Earth, a pair of astrophysicists argues. Everywhere else, stellar explosions known as gamma ray bursts would regularly wipe out any life forms more elaborate than microbes. The detonations also kept the universe lifeless for billions of years after the big bang, the researchers say.

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