Gemini (the Twins) is one of the northern zodiac constellations. It is home to the bright stars Pollux and Castor, the open cluster Messier 35, the planetary nebula known as the Medusa Nebula, and the supernova remnant IC 443 (the Jellyfish Nebula).| www.constellation-guide.com
Equatorial constellations are the 15 constellations that intersect the celestial equator. These are among the most universally recognizable constellations in the sky, visible from most places on Earth. They culminate highest when seen from locations near the equator.| www.constellation-guide.com
Learn about the 88 modern constellations, their names, history, how to identify them, why we see different constellations at different times of year, and other fun facts.| www.constellation-guide.com
Libra is one of the southern zodiac constellations. It is home to Methuselah Star (HD 140283), one of the oldest stars known, the nearby red dwarf Gliese 581, and the barred spiral galaxies NGC 5885 and NGC 5792.| www.constellation-guide.com
Cetus is a large constellation in the northern sky. It represents the sea monster from the myth of Andromeda. It is home to the variable star Mira, the nearby star Tau Ceti, and the barred spiral galaxy Messier 77.| www.constellation-guide.com
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
Messier 1 (M1), also known as the Crab Nebula, Taurus A, or NGC 1952, is an expanding supernova remnant and pulsar wind nebula. It is located in the northern constellation Taurus, the Bull. The Crab Nebula has an apparent magnitude of 8.4 and can be seen with binoculars in good viewing conditions. Messier 1 is… Read More »Messier 1: Crab Nebula| Messier Objects
Leo is one of the largest constellations in the northern sky. It is home to Regulus, one of the brightest stars in the sky, the nearby red dwarf Wolf 359, and the Leo Triplet of galaxies.| 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
Orion, the Hunter, is one of the best known constellations in the sky. Home to Orion's Belt, the Orion Nebula, and the bright stars Rigel and Betelgeuse, the constellation lies north of the celestial equator and is visible from both hemispheres.| www.constellation-guide.com
Eridanus is one of the largest constellations in the sky. It represents the celestial river. It is home to Achernar, one of the brightest stars in the sky, the nearby star Epsilon Eridani, and the Witch Head Nebula (IC 2118).| www.constellation-guide.com
Sirius, Alpha Canis Majoris (α CMa), is the brightest star in the sky. The Sirius star system lies at a distance of 8.6 ly from Earth in the constellation Canis Major. It can be found using the stars of Orion's Belt.| Star Facts
Gamma Cassiopeiae (γ Cas) is a spectroscopic binary star located at a distance of 550 light years from Earth in the constellation Cassiopeia. It is the central star of Cassiopeia's W.| Star Facts
Virgo is the second largest constellation in the sky. It is home to the Sombrero Galaxy (M104), the Virgo Cluster of galaxies, and Spica, one of the brightest stars in the sky.| www.constellation-guide.com
Messier 45 (M45), also known as the Pleiades or Seven Sisters, is a bright open star cluster located in the constellation Taurus, the Bull. The Pleiades cluster has an apparent magnitude of 1.6 and lies at an average distance of 444 light years from Earth. The cluster is also known as Melotte 22. It does… Read More »Messier 45: Pleiades| Messier Objects
Orion’s Belt is one of the most familiar asterisms in the night sky. It is formed by three stars in the constellation Orion: Alnitak, Alnilam, and Mintaka. The bright blue stars are part of the hourglass-shaped constellation figure of Orion.| www.constellation-guide.com
Perseus is a large constellation located in the northern sky. Associated with the story of Perseus in Greek mythology, the constellation hosts the radiant of the Perseid meteor shower.| www.constellation-guide.com
Sagittarius is a large constellation in the southern sky. It is one of the constellations of the zodiac. It contains the Milky Way centre and some of the best known nebulae in the sky.| www.constellation-guide.com
Procyon, Alpha Canis Minoris (α CMi), is the eighth brightest star in the sky. It is the primary component in a binary star system located 11.46 light-years away in the constellation Canis Minor.| Star Facts
Elnath, Beta Tauri (β Tau), is a blue-white giant star located at a distance of 134 ly from Earth in the constellation Taurus. It was once also known as Gamma Aurigae.| Star Facts
The list of all the named stars (stars with names that have been formally approved by the IAU), with name origins and etymologies explained.| Star Facts
Pollux, Beta Geminorum (β Gem), is an orange giant star located at a distance of 33.78 ly in the constellation Gemini. It is 43 times more luminous than the Sun.| Star Facts
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
Scorpius is a zodiac constellation located in the southern sky. It is home to Antares, one of the brightest stars in the sky, and to the bright open clusters Messier 6 (the Butterfly Cluster) and Messier 7 (Ptolemy's Cluster).| www.constellation-guide.com
Capricornus is a faint constellation in the southern sky. It represents the goat. The constellation is home to the multiple star system Delta Capricorni (Deneb Algedi) and the bright globular cluster Messier 30.| www.constellation-guide.com
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
Zodiac constellations are the 12 constellations that lie along the plane of the ecliptic, which is defined by the circular path of the Sun across the sky, as seen from Earth.| www.constellation-guide.com
