These days, scientists think they have a pretty good idea of what the universe is made of. By detecting the telltale signatures of various elements in celestial bodies like stars, asteroids, and other planets, scientists can estimate how abundant or rare each of the known elements is. Iron, however, has proven to be tricky to nail down.
We know iron is abundant on Earth as well as in stars, where the intense heat allows it to exist in the form of gas. That suggests that the element should also exist in relative abundance in the interstellar medium — the space between star systems in galaxies such as the Milky Way — but scientists haven’t detected much of it there. So, where is it? A new study published in the Astrophysical Journal might have the answer.
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Scientists think they’ve found all the ‘missing’ iron in the universe originally appeared on BGR.com on Wed, 10 Jul 2019 at 23:07:49 EDT. Please see our terms for use of feeds.
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