Clumps of dark matter could be lurking undetected in our galaxy

A hypothetical ‘dark’ force could allow clouds of invisible particles to collapse into small structures

dark matter halo

DARK COLLAPSE  Dark matter is normally thought to form a spherical halo (illustrated in blue) around galaxies like the Milky Way. Two physicists suggest that dark matter could collapse into more complex structures.

L. Calçada/ESO (CC BY 4.0)

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