What is this cloud of gas bigger than a galaxy doing all by its lonesome?

Astronomers have found a truly gigantic and fiercely hot cloud of gas floating near the edge of a galaxy cluster, and it’s blasting out X-rays. Hot gas is common in clusters, but usually concentrated near the center and thinner the farther you go outward. This one is a singular cloud millions of light years off to the side, and also seems to have a source of energy gently exciting the gas that is nowhere to be seen.

Oh, I do so love the weird ones.

Clusters of galaxies are truly gigantic struc...

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Published on August 04, 2021 06:00
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