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What are 90% of all atoms in the universe?

Published in Cosmic Composition 1 min read

90% of all atoms in the universe are estimated to be hydrogen.

The Dominance of Hydrogen

Hydrogen is not only the most abundant element in the universe but also a crucial component of the material world. Its prevalence stems from its simplicity and the fact that it was the first element formed after the Big Bang.

Key Facts about Hydrogen:

  • Abundance: Hydrogen accounts for approximately 90% of all atoms in the universe. (Reference: Today hydrogen is estimated to account for 90% of all atoms in the universe, and it is essential to the material world.20-Feb-2015)
  • Simplicity: It is the simplest element, consisting of one proton and one electron.
  • Formation: It was the first element to form after the Big Bang.
  • Importance: It is essential to the formation of stars and galaxies.

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