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Gravity refracts.

A gravitational lens effect can occur if a black hole, a galaxy or a cluster of galaxies lies between earth and some distant object. The gravity of the black hole or cluster will refract the light from the distant object, multiplying and distorting its image. The show astronomers what to look for, Emilio E. Falco of Massachusetts Institute of Technology and Michael J. Kurtz and Matthew H. Schenps of the Smithsonian Astrophysical Observatory Image Processing Laboratory developed a computer program that simulates gravitational lensing of astronomical objects.
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Title Annotation:computer program that simulates gravitational lensing of astronomical objects
Publication:Science News
Date:Jul 27, 1985
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