Astronomers have found a dozen supernovae taking place closer to the Big Bang than ever detected.


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Astronomers have found a dozen supernovae taking place only a few billion years after the Big Bang.

[The results suggest that these types of supernovae] were exploding about five times more frequently 10 billion years ago than they are today. These supernovas are a major source of iron in the universe, the main component of the Earth’s core and an essential ingredient of the blood in our bodies.

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