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Roy is a masculine given name and a family surname with varied origin. In Anglo-Norman England, the name derived from the Norman roy, meaning "king", while its Old French cognate, rey or roy (modern roi), likewise gave rise to Roy as a variant in the Francophone world.
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Tau Ceti f is a super-Earth or mini-Neptune orbiting Tau Ceti that was discovered in 2012 by statistical analyses of the star's variations in radial velocity, based on data obtained using HIRES, AAPS, and HARPS. It is of interest because its orbit places it in Tau Ceti's extended habitable zone, but a 2015 study implies that there may not be a detectable biosignature because it has only been in the temperate zone for less than one billion years.