Inside the mysterious collapse of dark matter halos

Physicists have unveiled a new way to simulate a mysterious form of dark matter that can collide with itself but not with normal matter. This self-interacting dark matter may trigger a dramatic collapse inside dark matter halos, heating and densifying their cores in surprising ways. Until now, this crucial middle ground of behavior was nearly impossible to model accurately. The new code makes these simulations faster, more precise, and accessible enough to run on a laptop.

Updates Jan 19, 2026 0 6 Add to Reading List

Inside the mysterious collapse of dark matter halos

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WHY THE HEN DOES NOT HAVE TEETH STORY BOOK

Click the image to get your copy!

WHY THE HEN DOES NOT HAVE TEETH STORY BOOK

Click the image to get your copy!

Physicists have unveiled a new way to simulate a mysterious form of dark matter that can collide with itself but not with normal matter. This self-interacting dark matter may trigger a dramatic collapse inside dark matter halos, heating and densifying their cores in surprising ways. Until now, this crucial middle ground of behavior was nearly impossible to model accurately. The new code makes these simulations faster, more precise, and accessible enough to run on a laptop.

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