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‘Bridge’ of stray stars reveals two massive galaxies tearing each other apart

Astronomers have discovered a ghostly, million-light-year-long bridge of stars connecting two massive galaxies within the Abell 3667 cluster, 700 million light-years away. This glowing thread of intracluster light marks the first optical evidence of a cosmic tug-of-war: a rare, aggressive galactic merger where two entire galaxy clusters are colliding and combining.

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