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Galaxy may have eaten all its neighbours and now it’s all alone

The lonely galaxy containing a supermassive black hole, two jets, and an X-ray hotspot, all surrounded by hot gas

X-ray: NASA/CXC/Univ. of Torino/V. Missaglia et al.

A distant galaxy seems to be the only one left in its cluster. It has all the signatures of a galaxy cluster that should contain hundreds of galaxies, but it appears to be all alone, which may cause a rethink of how galaxy clusters form and evolve.

Juan Madrid at the University of Texas Rio Grande Valley and his colleagues examined the 3C 297 galaxy, which is about 9.2 billion light …

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