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Optical CCD image of Einstein ring

Optical CCD image of Einstein ring

R932/0018

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Credit

NOAO / SCIENCE PHOTO LIBRARY NOAO / SCIENCE PHOTO LIBRARY

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Caption

Gravitational lensing. Optical CCD (charge coupled device) image of a large "luminous arc" associated with Galaxy Cluster 2242-02. Several theories have been put forward to explain such arcs. Most popular of these is that the arc is part of an Einstein ring: the smeared-out image of a distant galaxy or quasar whose light has been "lensed" by the gravity of the cluster of galaxies. Einstein proposed the effect of gravitational lensing in 1936.

Release details

Model release not required. Property release not required.

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