"Hairy Dark Matter" by NASA/JPL-Caltech / Public Domain

Is Dark Matter Fuzzy?

Apr 11, 2019

By Mara Johnson-Groh

Physicists have long sought to uncloak dark matter and get an actual look at the mysterious substance that makes up a quarter of the universe. One idea for what’s hiding beneath the cloak of invisibility? Many tiny, fuzzy particles that behave like one gigantic particle.

But the most recent hunt for such fuzzy, ultralight particles, published on Feb. 28 in the Journal of Cosmology and Astroparticle Physics, has come up empty-handed.

The results suggest that if dark matter is really made of these miniscule particles, it is as elusive as its name suggests, and barely interacts with ordinary matter.

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