Red supergiant
Videos
Red supergiants are stars with a supergiant luminosity class and a stellar classification K or M. They are the largest stars in the universe in terms of volume, although they are not the most massive
Fluid dynamics simulations of a red supergiant, with giant convection cells and puffy surface
Betelgeuse pulsating and showing spectral line profile changes (HST UV images)
Most red supergiants end their lives as a Type II supernova, such as SN2013ej at bottom left in a spiral arm of M74.
RSGC1, the first of several massive clusters found to contain multiple red supergiants.
Antares
Videos
Antares is the brightest star in the constellation of Scorpius. It has the Bayer designation α Scorpii, which is Latinised to Alpha Scorpii. Often referred to as "the heart of the scorpion", Antares i
Red supergiant
…classification K or M. They are the largest stars in the universe in terms of volume, although they are not the most massive or luminous. Betelgeuse and Antares A are the brightest and best known red supergiants (RSGs), indeed the only first magnitude red supergiant stars. Stars are classified as supergiants on…
Antares between τ (lower left) and σ Scorpii; Antares appears white in this WISE false-colour infrared image.
Antares near the Sun on 30 November 2012
VLTI reconstructed view of the surface of Antares A
Antares seen from the ground. The very bright star towards the upper left corner of the frame is Antares.