An "Einstein Cross" Gravitational Lens

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A Hubble image of a quadruple gravitational lens. The gravity of the galaxy at the center has redirected the light of a background galaxy into four images; located above, below, left, and right of center. This distribution of lensed images is called an “Einstein Cross.”

Credit: NASA, ESA, and STScI

For more information: http://hubblesite.org/newscenter/archive/releases/1990/20/image/a/

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