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Waspie_Dwarf

Clues to the Growth of the Colossus in Coma

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Coma Cluster: Clues to the Growth of the Colossus in Coma

A team of astronomers has discovered enormous arms of hot gas in the Coma cluster of galaxies by using NASA's Chandra X-ray Observatory and ESA's XMM-Newton. These features, which span at least half a million light years, provide insight into how the Coma cluster has grown through mergers of smaller groups and clusters of galaxies to become one of the largest structures in the Universe held together by gravity.

A new composite image, with Chandra data in pink and optical data from the Sloan Digital Sky Survey appearing in white and blue, features these spectacular arms (mouse over the image for their location). In this image, the Chandra data have been processed so extra detail can be seen.

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Edited by Waspie_Dwarf
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Tour of Coma Cluster

Galaxy clusters are the largest structures in the Universe held together by gravity. Because they are so big, they play a very important role in the Universe. A new result is revealing clues to how these giant structures grow and evolve over time. Astronomers have discovered enormous arms of hot gas in the Coma cluster of galaxies by using Chandra X-ray Observatory and XMM-Newton, another orbiting X-ray observatory run by the European Space Agency. Researchers think that these arms were most likely formed when smaller galaxy clusters had their gas stripped away by the head wind created by the motion of the clusters through the hot gas -- much the same way that the headwind created by a roller coaster blows the hats off riders. By studying these remarkable arms that span over a half a million light years across, astronomers are taking another step toward understanding the past, present, and perhaps future of these colossal objects.

Credit: NASA/CXC/A. Hobart

Source: Chandra - Photo Album

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amazing

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