Science

Do Galaxy-Free Dark Matter Halos Exist in Universe?

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Apr 8, 2025 - 16:30
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Do Galaxy-Free Dark Matter Halos Exist in Universe?
From a great distance, our Milky Way Galaxy would look like a thin disk of stars that orbits once every few hundred million years around its central region, where hundreds of billions of stars provide the gravitational ‘glue’ to hold it all together. But this pull of gravity is much weaker in the Galaxy’s far outer disk. There, the hydrogen atoms making up most of the Milky Way’s gas disk are no longer confined to a thin plane, instead they give the disk an S-like, or warped, appearance. Image credit: Xiaodian Chen.

A new study by University of California, San Diego computational astrophysicist Ethan Nadler shows that star formation can occur in halos down to 10 million solar masses through molecular hydrogen cooling.

The post Do Galaxy-Free Dark Matter Halos Exist in Universe? appeared first on Sci.News: Breaking Science News.

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