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Supernova dealt deaths on Earth? Stellar blasts may have killed ancient marine life

A group of young, hot stars in and near the constellation Scorpius shine brightly, making a memorable sight in the southern night sky. But if Narciso Benítez of Johns Hopkins University in Baltimore and his colleagues are correct, this collection of stars could have a lot to answer for. One of its members may have exploded in the solar systems neighborhood 2 million years ago, causing the widespread destruction of a variety of marine species here on Earth.

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