A Rare Extragalactic Stellar Stream Reveals Hidden Dark Matter

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Hubble Space Telescope image showing the globular cluster stellar stream. Hubble Space Telescope and Holm et al. (2026)

Scientists have discovered a rare star formation hidden in a distant galaxy, unlike anything seen before beyond the Milky Way. What’s more, the discovery offers a brand new way to measure the distribution of dark matter in distant galaxies.

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