SpaceWiredabout 1 hour ago
Three Ghostly Galaxies Lack Dark Matter
8 min read
Scientists announced in June 2026 that three galaxies, DF2, DF4, and DF9, contain little to no dark matter. This discovery challenges modified gravity theories by showing ordinary matter can form stars without invisible glue. The findings suggest dark matter is a physical substance rather than a modification of gravity. Researchers used telescopes to estimate masses based on star motions.
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