Photo credit: ESA/Hubble & NASA, G. Smith, H. Ebeling, D. Coe
NASA / ESA’s Hubble Space Telescope captured a stunning image of galaxy cluster Abell 3192, suffused with hot gas that emits powerful X-rays, curving spacetime around it. This phenomenon is called a gravitational lens, where smaller galaxies behind the cluster can be observed being distorted into long, warped arcs around its edges.
In this image, we can see a cluster of galaxies, concentrated around two large elliptical galaxies, while the black background is bathed in smaller galaxies of all shapes and sizes. In the top left and bottom right, there are a few galaxies that appear notably distorted into curves by gravity. Abell 3192 was initially thought to comprise a single cluster of galaxies, concentrated at a single distance, but the cluster’s mass seemed to be densest at two distinct points instead of just one.
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It was subsequently shown that the original Abell cluster actually comprised two independent galaxy clusters — a foreground group around 2.3 billion light-years from Earth, and a further group at the greater distance of about 5.4 billion light-years from our planet,” said the ESA.
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