isophotal
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isophotal — adjective see isophote … New Collegiate Dictionary
isophotal — … Useful english dictionary
isophote — noun Etymology: International Scientific Vocabulary is + phote (from Greek phōt , phōs light) more at fancy Date: circa 1909 a curve on a chart joining points of equal light intensity from a given source • isophotal adjective … New Collegiate Dictionary
Perseus Cluster — Galaxy cluster name = Perseus Cluster caption = Perseus Cluster on DSS2, 1° view credit = Palomar Observatory/STScI/WikiSky constellation = Perseus epoch=J2000 ra=RA|03h|18cite web title=NASA/IPAC Extragalactic Database work=Results for Perseus… … Wikipedia
galaxy — /gal euhk see/, n., pl. galaxies. 1. Astron. a. a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. b. (usually cap.) See Milky Way. 2. any large and brilliant or impressive… … Universalium
