The image shows the galaxy cluster Abell 2744. It combines observations in the visible light spectrum with X-ray images of satellite Chandra (red) and clouds of dark matter (blue). The particularities of the system are clearly visible, for example a clump of dark matter with no stars or gas (northwest sector) and a clump of galaxies and dark matter without gas (western sector). The scale indicates a distance of 250,000 parsecs, approximately nine times the diameter of the visible part of our own galaxy, the Milky Way. In astronomy, the compass points East and West are switched, as shown at the bottom right corner of the image.
Image source: NASA, ESA, ESO, CXC, J. Merten (Heidelberg/Bologna) & D. Coe (STScl)
(2022 KB, 1181 x 1181 pixels)
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