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Hubble Space Telescope image of the galaxy cluster Abell 2218. The mass density in the cluster is high enough to distort the images of background galaxies by gravitational lensing, forming multiple arc-like images seen here. See press release.

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The background colour of this page is "Cosmic Latte", the average colour of the Universe.
Last modified: 2005 September 21; Created: 2002 April 10; Maintained by: Michael Drinkwater; Email: mjd @ physics uq edu au