This story was updated April 4 at 12:24 p.m. EDT. Hydrogen is the most common element in the universe, but why is that? To answer this question, "we need to go back to the Big Bang," said May Nyman, a ...
In some sense, what you might have suspected from the first day of high-school chemistry is true: The periodic table is a colossal waste of time. Nine out of every 10 atoms in the universe are ...
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