RSGC1-F01 is a red supergiant star located approximately 22,000 light-years away in the constellation Scutum. With an estimated radius of 1,450 to 1,530 solar radii, it is one of the largest stars known. The supergiant is member of the massive young star cluster RSGC1. Discovered in 2006, the cluster and its members are invisible to the unaided eye and cannot be seen in optical telescopes.| Star Facts
The largest stars in the known universe, listed here, are mostly cool red supergiants and hypergiants. Their radii are notoriously difficult to measure for several reasons.| Star Facts
BAT99-98 is a Wolf-Rayet star located in the Tarantula Nebula in the Large Magellanic Cloud. With a mass 226 times that of the Sun, it may be the most massive star discovered to date.| Star Facts
Kepler’s Supernova (SN 1604) is the remnant of a supernova first observed in October 1604. The supernova occurred in the Milky Way galaxy, less than 20,000 light-years from the Sun. It peaked at magnitude -2.25 to -2.5 and could even be seen in daytime.| www.constellation-guide.com
Mensa is a small, faint constellation in the far southern sky. It was named after Table Mountain (Mons Mensae) in South Africa. It contains a part of the Large Magellanic Cloud.| www.constellation-guide.com
Dorado is a small, faint constellation located in the far southern sky. It represents the dolphinfish or swordfish. The constellation contains most of the Large Magellanic Cloud, a satellite galaxy of the Milky Way.| www.constellation-guide.com
Pictor is a small, faint constellation located in the far southern sky. It was created in the 18th century. It represents a painter's easel.| www.constellation-guide.com
The Lobster Nebula (War and Peace Nebula, NGC 6357) is a large emission nebula located approximately 5,900 light-years away in the constellation Scorpius. It hosts some of the most massive stars in the Milky Way galaxy| www.constellation-guide.com
Canopus, Alpha Carinae (α Car), is a white bright giant star located at a distance of 310 light years from Earth in the constellation Carina. It is the second brightest star in the sky.| Star Facts
Regor, Gamma Velorum (γ Vel), is a multiple star system located at a distance of 1,095 light years in the constellation Vela. It contains one of the nearest supernova candidates to Earth.| Star Facts
Rho Cassiopeiae (ρ Cas) is a yellow hypergiant located 3,425 light-years away in the constellation Cassiopeia. It is one of the most luminous stars known, with an energy output more than 300,000 times that of the Sun.| Star Facts
The Gum Nebula is a large emission nebula located approximately 1,470 light-years away in the southern constellations Puppis and Vela. It covers an area of 36 degrees, which is equivalent to 72 full Moons.| www.constellation-guide.com
Eta Carinae (η Car) is a massive binary star system located approximately 7,500 light-years away in the constellation Carina. The system consists of two exceptionally massive stars that will end their lives as supernovae.| Star Facts
R136a1 is a Wolf-Rayet star located approximately 163,000 light-years away in the constellation Dorado. It is one of the most massive and luminous stars known.| Star Facts
The Ghost Head Nebula (NGC 2080) is an emission nebula located 160,000 light-years away in the Large Magellanic Cloud in the constellation Dorado. The star-forming region appears near the larger Tarantula Nebula (30 Doradus).| www.constellation-guide.com
AG Carinae (HD 94910) is a luminous blue variable (LBV) located 17,000 light-years away in the constellation Carina (the Keel). It is one of the most luminous stars known in the Milky Way.| Star Facts
The Tarantula Nebula (30 Doradus) is a vast star-forming region located approximately 160,000 light-years away in the constellation Dorado. It is part of the Large Magellanic Cloud (LMC), the brightest satellite galaxy of the Milky Way.| www.constellation-guide.com
The life cycle of a star is the process of change in structure and composition that every star undergoes over time. It can last for a few million years or trillions of years, depending on the star’s mass.| Star Facts
Find out which constellations are visible tonight from your location!| www.constellation-guide.com