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
Tianguan (ζ Tauri) is a hot blue giant star located 440 light-years away in the constellation Taurus. It marks the southern horn of the Bull and appears near the famous Crab Nebula (M1) in the sky.| Star Facts
Ain, Epsilon Tauri (ε Tau), is an orange giant star located 146 light-years away in the constellation Taurus. It is a member of the Hyades cluster and marks one of the Bull's eyes.| Star Facts
The Rosette Nebula is a vast emission nebula associated with an open cluster in Monoceros constellation. It lies at a distance of 5,200 light years. It is a popular target for visual astronomy and astrophotography.| www.constellation-guide.com
Messier 4 (M4) is a bright globular cluster located in the southern constellation Scorpius. It lies at an approximate distance of 7,200 light years from Earth and has an apparent magnitude of 5.9. The cluster has the designation NGC 6121 in the New General Catalogue. M4 was discovered by the Swiss astronomer and mathematician Jean-Philippe Loys… Read More »Messier 4| Messier Objects
Asterisms are defined as patterns formed by stars of one or more constellations. These star patterns are commonly recognized by observers across the world and once served as a basis for the modern 88 constellations.| www.constellation-guide.com
The Pencil Nebula is the brightest part of the larger Vela Supernova Remnant, one of the closest supernova remnants to the Sun. The nebula has an apparent magnitude of 12.0 and lies approximately 815 light-years away.| www.constellation-guide.com
The Vela Supernova Remnant (Vela SNR) is the remnant of a supernova that occurred around 11,000 years ago in the southern constellation Vela. The remnant lies approximately 936 light-years away. It is one of the nearest supernova remnants to the Sun.| www.constellation-guide.com
T Tauri is a young variable star located 471 light-years away in the constellation Taurus. It serves as the prototype for the T Tauri variables and illuminates Hind’s Variable Nebula (NGC 1555).| Star Facts
Taurus is a large constellation in the northern sky. It is home to Aldebaran, one of the brightest stars in the sky, the Crab Nebula, a supernova remnant, and the Pleiades and the Hyades, the nearest open clusters to Earth.| www.constellation-guide.com
Aldebaran, Alpha Tauri (α Tau), is an orange giant star located at a distance of 65.3 ly from Earth in the constellation Taurus. It marks the eye of the Bull.| Star Facts
Charles Messier’s Catalogue of Nebulae and Star Clusters (Catalogue des Nébuleuses et des Amas d’Étoiles) is an astronomical catalogue of 110 bright deep sky objects that may be mistaken for comets. Even though it was compiled for the purpose of helping observers distinguish between permanent and transient objects in the night sky, the Messier catalogue… Read More »Messier Catalogue| Messier Objects