Researchers has detected the element tellurium for the first time in three ancient stars. Tellurium is rare on Earth. Nearly 13.7 billion years ago, the universe was made of only hydrogen, helium and ...
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CAMBRIDGE, Mass. — Nearly 13.7 billion years ago, the universe was made of only hydrogen, helium and traces of lithium — byproducts of the Big Bang. Some 300 million years later, the very first stars ...
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