100 ghost galaxies may be orbiting the Milky Way—and we’re just now uncovering them
New supercomputer simulations suggest the Milky Way could be surrounded by dozens more faint, undetected satellite galaxies—up to 100 more than we currently know. These elusive "orphan" galaxies have likely been stripped of their dark matter by the Milky Way’s gravity and hidden from view. If spotted by next-gen telescopes like the Rubin Observatory’s LSST, they could solidify our understanding of the Universe’s structure and deliver a stunning validation of the Lambda Cold Dark Matter model.
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