Perseus is prominent in the northern sky of the Northern Hemisphere in the spring, and is also visible in the northern part of the Southern Hemisphere. Camelopardalis and Cassiopeia are to the north of Perseus, and Andromeda and Triangulum are to the west. The constellations Ares and Auriga (with the bright yellow star Capella) lie to the east of Perseus. The other notable star is Algol, a blue-white star that forms a line with Mirfak to identify the center of the constellation. The brightest is Mirfak, a yellow star at the midpoint of the constellation. Once you’ve spotted Perseus, look for his two brightest stars. If Cassiopeia looks like an “M”, Perseus will be the group of stars below the right side of the zigzag. If Cassiopeia looks like a “W”, Perseus will be the group of stars below the left side of the zig-zag. To locate Perseus, look north where Cassiopeia forms a glowing “W” or “M” (depending on her orientation). Fortunately, he is close to Cassiopeia the Queen, one of the most visible formations in the sky. Perseus the hero is not as bright or as easy to recognize as some of the other constellations. It is the 24th largest constellation in the sky. Today, Perseus is one of the 88 constellations recognized by the International Astronomical Union. Ptolemy described Perseus and 47 other constellations in the 2nd century. The three-letter abbreviation for it is Per. In the 19th century, the constellation was known as Perseus et Caput Medusae. The constellation resembles the Greek hero Perseus who raises his diamond sword above his head with one hand and holds the decapitated head of Medusa in the other. The constellation of Perseus is a constellation located in the northern sky. We cultivate excellence, deliver value, enhance education, and engage the public.Image Credit: NASA, CXC, GSFC, Stephen Walker, et al. The National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science to advance the national health, prosperity, and welfare to secure the national defense."ĪUI collaborates with the scientific community and research sponsors to plan, build, and operate cutting-edge facilities. NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media. Observing time on NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Operated under cooperative agreement by Associated Universities, Inc.įounded in 1956, the NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. The National Radio Astronomy Observatory is a facility of the National Science Foundation
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