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NASA@NASA · 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,…

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Summary

A 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.

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  1. #1

    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, reflect, or absorb light, but it has gravity like ordinary matter. 🧵

  2. #2

    Scientists still have a lot to learn about dark matter, but @NASARoman aims to shed light on the mystery. Learn how Roman will teach us about this invisible substance: go.nasa.gov/3TTr88n