R Doradus (R Dor) is a pulsating variable red giant located 178 light years away in the southern constellation of Dorado (the Dolphinfish). The asymptotic… Read More »R Doradus: Pulsating Giant the Size of the Orbit of Mars
Achernar, Alpha Eridani (α Eri), is a hot blue main sequence star located approximately 139 light-years away in the constellation Eridanus (the River). With an… Read More »Achernar (Alpha Eridani): The Flattest Bright Star in the Sky
119 Tauri (119 Tau) is a red supergiant located approximately 1,800 light-years away in the constellation Taurus. It has been nicknamed Ruby Star because of… Read More »Ruby Star (119 Tauri): One of the Sky’s Reddest Stars
Betelgeuse, Alpha Orionis (α Ori), is a red supergiant star located in the constellation Orion, the Hunter. It has an estimated radius 640 to 764… Read More »Betelgeuse
Alnitak, Zeta Orionis (ζ Ori), is the primary component in a triple star system with a combined apparent magnitude of 1.77. The blue supergiant star… Read More »Alnitak (Zeta Orionis)
Sirius, Alpha Canis Majoris (α CMa), is the brightest star in the night sky and one of the nearest star systems to Earth. The blue-white… Read More »Sirius
Aldebaran, Alpha Tauri (α Tau), is an orange giant star located 65.3 light-years away in the constellation Taurus. With an apparent magnitude that varies from 0.75… Read More »Aldebaran