Gravity refracts.A gravitational lens effect can occur if a black hole, a galaxy or a cluster of galaxies cluster of galaxies Gravitationally bound grouping of galaxies, numbering from the hundreds to the tens of thousands. Large clusters of galaxies often exhibit extensive X-ray emission from intergalactic gas heated to tens of millions of degrees. lies between earth and some distant object. The gravity of the black hole or cluster will refract refract /re·fract/ (re-frakt´) 1. to cause to deviate. 2. to ascertain errors of ocular refraction. re·fract v. 1. 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 Massachusetts Institute of Technology, at Cambridge; coeducational; chartered 1861, opened 1865 in Boston, moved 1916. It has long been recognized as an outstanding technological institute and its Sloan School of Management has notable programs in business, and Michael J. Kurtz and Matthew H. Schenps of the Smithsonian Astrophysical Observatory The Smithsonian Astrophysical Observatory (SAO) is a "research institute" of the Smithsonian Institution headquartered in Cambridge, Massachusetts, where it is joined with the Harvard College Observatory (HCO) to form the Harvard-Smithsonian Center for Astrophysics (CfA). Image Processing Laboratory developed a computer program that simulates gravitational lensing of astronomical objects. |
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