December 8, 2021

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Hubble Space Telescope finds galaxy with weirdly little dark matter

3 min read

Astronomers may not know what dark matter is, but they do know that galaxies are supposed to contain a lot of the shadowy, invisible substance. 

Dark matter makes up the lion’s share of a galaxy’s mass, and it’s critical to hold a galaxy’s stars, gas and dust together. So, when scientists find evidence twice over that a certain galaxy seems to have a tiny fraction of the dark matter it ought to have, astronomers sit up and pay attention. And that’s where recent observations with the venerable Hubble Space Telescope come in.

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