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The universe’s first supernovas probably produced water

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Astronomers say first generation of stars produced significant amounts of water just 100 million to 200 million years after the Big Bang .

The ingredients for life were all in place in dense cloud cores [leftover after stellar deaths] so early after Big Bang , scientists say.

For complex molecules to form in significant quantities, relatively dense and cool conditions, ideally less than a few thousand degrees Celsius, are needed.