Geophysics

Where do the hydrogen and oxygen in water come from?
Answered by Discovery Channel
  • Discovery Channel

    Discovery Channel

  1. Hydrogen formed along with helium within minutes of the big bang; together, the two elements account for 98 percent of the universe's visible matter. Oxygen and the other heavy elements formed inside of stars through fusion, a process that joins the nuclei of lighter elements into heavier ones and releases a whole lot of energy.


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