jojodancer7237 jojodancer7237
  • 25-01-2018
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The earliest nebulae to form in the universe were made almost entirely of

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Kalahira
Kalahira Kalahira
  • 07-02-2018
hydrogen and helium, because heavier elements were synthesized in stars that had not yet appeared. There were also trace amounts of deuterium, lithium, beryllium and boron, but practically no elements heavier than those.
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