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Jul 24, 2026
There is more than meets the eye in this photo… The ring around the central galaxy cluster is evidence of dark matter, the invisible glue holding the universe together. Dark matter doesn’t emit, refl...
SummaryA photo reveals a ring of dark matter around a galaxy cluster, demonstrating how this invisible substance—which comprises most of the universe's mass—bends light through gravity. NASA's Roman Space Telescope aims to unlock more secrets about dark matter and its role in the cosmos.2 tweets1 min read