Posted by Larry Sessions in Astronomy Essentials | Brightest Stars|8 months ago
Rigel, brightest star in the easy-to-see constellation of Orion the Hunter, shines with a blue-white color. Hidden behind its brilliant classic beauty is a fascinating and complex stellar life history.
Posted by Larry Sessions in Astronomy Essentials | Brightest Stars|10 months ago
Achernar is the 9th brightest star and flattest star known. It’s famous as the southernmost bright star in the constellation Eridanus the River. Here’s why much of Earth never sees it … and how you can.
Delta Cephei doubles in brightness on a precise schedule, every 5.36 days. Its brightness changes are tied to its absolute brightness. Learn how this star helped establish the known distance scale of our galaxy and universe.