Astrophysicists offer explanation for origin of one of Milky Way’s largest satellites

By Staff | Sci.News |

SCI.NEWS - “Since its discovery in 2016, there have been many attempts to reproduce Crater II’s unusual properties, but it has proved very challenging,” said University of California, Riverside’s Professor Hai-Bo Yu.

Dark matter makes up 85% of the Universe’s matter, and it can form a spherical structure under the influence of gravity called a dark matter halo.

Invisible, the halo permeates and surrounds a galaxy like Crater II. The fact that Crater II is extremely cold indicates its halo has a low density.

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