The bright stars of mighty Orion, the Hunter, shine in the southern sky on mid-February evenings. The sword of Orion, which covers an area of 1.5 by 1 degrees (about…

Orion’s three belt stars are bright enough to tolerate tonight’s moonlight. They may look similar, but they are quite different, under closer inspection. The left-most (easterly) of the three, magnitude…

The star Algol in the constellation of Perseus represents the glowing eye of Medusa from Greek mythology. Also designated Beta Persei, it is among the most accessible variable stars for…