HomeAstronomyGalaxy cluster spied forming in early universe (photos, video)

Galaxy cluster spied forming in early universe (photos, video)

The formation of vast clouds of hot gas during the birth of a distant galaxy cluster has been observed for the very first time by astronomers using ALMA, the Atacama Large Millimeter/submillimeter Array, in Chile.

Galaxy clusters are not just associations of many galaxies; in the space between those galaxies is a fog of hot gas, radiating at millions of degrees Celsius. Astronomers refer to this gas as the intra-cluster medium (ICM), and it contains more mass than all the galaxies in the cluster. As such, it’s an important component of galaxy clusters, although it is still far outweighed by the amount of invisible dark matter that they contain.

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