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A faint glow found between galaxies could be a beacon for dark matter

Intracluster light may help reveal how the mysterious particles behave

Abell S1063

LIGHTING THE DARK  A feeble glare known as intracluster light traces the location of dark matter within galaxy clusters such as Abell S1063 (shown).

J. Lotz/STScl, ESA, NASA

By Emily Conover

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