M. KORNMESSER / LARS LINDBERG CHRISTENSEN / ESA / HUBBLE / SCIENCE PHOTO LIBRARY M. KORNMESSER / LARS LINDBERG CHRISTENSEN / ESA / HUBBLE / SCIENCE PHOTO LIBRARY
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Images of a distant galaxy distorted by the gravitational field of the galaxy cluster ZwCl0024+1652. The image of the galaxy has been distorted so that five images of it are seen, through a process known as gravitational lensing. By measuring the lensing effects, the gravitational field of the foreground cluster can be determined. This revealed a ring of dark matter around the cluster. The cluster lies some five billion light years away, with the galaxy twice that distance.
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