Fornax galaxy cluster

Fornax galaxy cluster

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Credit: NASA/SCIENCE PHOTO LIBRARY

Caption: Fornax galaxy cluster, Chandra X-ray image. The cluster core has a swept-back cometary-shaped tail extending for more than half a million light years. This implies that the hot gas cloud is moving through a larger, but less dense, cloud, creating a headwind. Galaxies whose orbit takes them through the cluster core will eventually be stripped of all their gas. The motions of the core indicate that it lies along a structure composed largely of dark matter, which is collapsing towards a common centre of gravity. Image data collected between 20th May and 1st June 2003, image released 8th September 2004.

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Keywords: 2003, 21st century, astronomical, astronomy, astrophysical, astrophysics, chandra, coloured, false-colour, false-coloured, fornax, fornax constellation, galaxy, galaxy cluster, gas cloud, intergalactic headwind, may, physical, physics, ram pressure, satellite, space, tail, x-ray, xray

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