EarthSky Tonight—September 17, Close-up on

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Will you be able to see the ‘demon’ star in the constellation Perseus the Hero tonight? Yesterday’s chart showed you how to use the constellation Cassiopeia to locate Perseus in the northeast at mid to late evening. The brightest star in Perseus is Alpha Persei, whose proper name is Mirfak, pronounced MEER-fak. Comet Hartley 2 passes in front of Cassiopeia, Perseus in autumn 2010 Meanwhile, the best-known star in this ... Full Story