Astronomers catch hot birth of galaxy cluster more than 11 billion light-years away

Phys.org reports that astronomers have detected an enormous cloud of gas, tens of millions of degrees hot, surrounding a quasar embedded in a dense galaxy concentration more than eleven billion light‑years away. The detection comes from more than six hundred thousand seconds of observations with NASA's Chandra X‑ray Observatory, which revealed diffuse, extended X‑ray emission. The findings, published in the journal Astronomy and Astrophysics on July twenty‑four, provide one of the clearest views yet of a galaxy cluster in the making.

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