The dark matter hypothesis isn't perfect, but the alternatives are worse - Space.com

Simulations of dark matter evolving in the universe predict that every galaxy should have hundreds of satellites, while observations consistently come up short.

You may not be a fan of dark matter, the hypothetical particle that makes up the bulk of the mass in the universe. And it's true that the dark matter hypothesis has its shortcomings — and, of course,… [+5300 chars]

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