Most of the mass in the universe is made up of a kind of matter that none of us have ever seen. It’s called “dark matter” and, despite being incredibly abundant, it’s also extremely difficult to study. Decades-old calculations suggested that there is more dark matter around younger galaxies than the ancient ones from the early days of the universe, but then where did the dark matter we see today come from? A new study offers the answer.
Past research suggested that galaxies we see nearby have more dark matter than those that are very distant. The farther away a galaxy is the farther back in time we’re effectively looking, and scientists believed that those ancient galaxies didn’t have all that much dark matter around them. As it turns out, that isn’t the case.
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Scientists think they know where the early universe’s dark matter has been hiding originally appeared on BGR.com on Wed, 2 Jan 2019 at 17:54:26 EDT. Please see our terms for use of feeds.
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