Supernovas may have had a role in two of Earth’s largest mass extinctions, study suggests
A research team linked nearby stellar explosions to at least one, possibly two, mass die-offs after calculating the supernova ...
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Supernovas may have had a role in two of Earth’s largest mass extinctions, study suggests
The calculations suggested that 2.5 supernovas might affect Earth in some way every 1 billion years ... cause a mass extinction. During the Devonian geological era, life thrived on land for ...
How survivors spanned the globe after Earth's biggest mass extinction
Scientists don't call it the "Great Dying" for nothing. About 252 million years ago, upward of 80% of all marine species ...
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NASA just discovered the ‘Door to Hell’ that has 2.6 billion times the mass of the sun, scientists are shocked
NASA discovered a supermassive black hole at the center of galaxy M87, 52 million light years from Earth. It's 2.6 billion times the mass of the ... first detected decades ago, that stretches ...