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
Messier 57 (M57), also known as the Ring Nebula, is a well-known planetary nebula located in the northern constellation Lyra. The Ring Nebula has an apparent magnitude of 8.8 and lies at an approximate distance of 2,300 light years from Earth. It has the designation NGC 6720 in the New General Catalogue. Messier 57 lies… Read More »Messier 57: Ring Nebula| Messier Objects
Saiph, Kappa Orionis (κ Ori), is a blue-white supergiant located at a distance of 650 ly from Earth in the constellation Orion. It marks Orion's right knee.| Star Facts
The Hyades (Caldwell 41, Melotte 25) is a bright, large open cluster located 153 light-years away in the constellation Taurus. It is the nearest open star cluster to the Sun. It marks the head of the celestial Bull.| www.constellation-guide.com
Mizar, Zeta Ursae Majoris (ζ UMa), is a quadruple star system in Ursa Major. It lies at a distance of 82.9 ly. It is one of the stars that form the Big Dipper.| Star Facts
Tabit (Pi³ Orionis) is an F-type main sequence star located 26.32 light-years away in the constellation Orion. It is one of the relatively bright stars that form Orion's Shield.| Star Facts
Corvus, the Crow, is a small constellation in the southern sky. It represents the sacred bird of Apollo. The constellation is home to the navigational star Gienah and the famous Antennae Galaxies (NGC 4038 and NGC 4039).| www.constellation-guide.com
Castor, Alpha Geminorum (α Gem), is a sextuple star system located at a distance of 51 ly from Earth in the constellation Gemini. It consists of three binary pairs.| Star Facts
Scheat, Beta Pegasi (β Peg) is a red giant star located at a distance of 196 light years from Earth in the constellation Pegasus. It is one of the stars of the Great Square of Pegasus.| Star Facts
The Great Square of Pegasus is an asterism formed by three bright stars in Pegasus constellation – Markab, Scheat and Algenib – and Alpheratz in Andromeda.| www.constellation-guide.com
Alnitak, Zeta Orionis (ζ Ori), is a triple star system located at a distance of 1,260 light years. It forms Orion's Belt with Alnilam and Mintaka.| Star Facts
The Flame Nebula (NGC 2024) is an emission nebula located 1,350 light years away in the constellation Orion. It is illuminated by the supergiant Alnitak, the easternmost star of Orion's Belt.| www.constellation-guide.com
Messier 33 (M33), also known as the Triangulum Galaxy, is a famous spiral galaxy located in the small northern constellation Triangulum. The Triangulum Galaxy is the third largest galaxy in the Local Group, after the Andromeda Galaxy and the Milky Way. It is also the second nearest spiral galaxy to the Milky Way and the… Read More »Messier 33: Triangulum Galaxy| Messier Objects
Alpha Centauri is the nearest star system to the Sun, located at a distance of only 4.37 light years or 1.34 parsecs from Earth. It is the brightest star in Centaurus constellation and the third brightest star in sky.| 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
Equuleus is the smallest constellation in the northern sky. It represents a little horse or foal and lies near the larger horse, Pegasus. The constellation is home to the yellow giant Kitalpha and the spiral galaxy NGC 7015.| www.constellation-guide.com
Delphinus is one of the smallest northern constellations. Recognizable for its distinctive quadrilateral shape, the constellation is home to the Blue Flash Nebula (NGC 6905) and the globular clusters NGC 6934 and NGC 7006.| www.constellation-guide.com
Acrux, Alpha Crucis (α Cru), is a multiple star system located at a distance of 320 ly from Earth in the constellation Crux. It is the brightest star of the Southern Cross.| Star Facts
Cygnus, the Swan, is one of the largest northern constellations. Recognizable for the Northern Cross, it is home to the bright supergiant Deneb, the North America Nebula (NGC 7000) and the Gamma Cygni Nebula (IC 1318).| www.constellation-guide.com
Enif, Epsilon Pegasi (ε Peg) is an orange supergiant star located at distance of 690 light years from Earth in the constellation Pegasus.| Star Facts
The Butterfly Nebula (NGC 6302, Caldwell 69) is a bipolar planetary nebula located approximately 3,400 light-years away in the constellation Scorpius. It can be observed in amateur telescopes.| www.constellation-guide.com
Aquarius is one of the constellations of the zodiac. Representing the Water Bearer, the constellation is home to the yellow supergiants Sadalsuud and Sadalmelik and the famous Helix Nebula.| www.constellation-guide.com
The Fish Hook is an asterism formed by about a dozen bright stars in the zodiac constellation Scorpius. The curved star pattern forms the heart, body, tail, and stinger of the celestial Scorpion.| www.constellation-guide.com
The Northern Jewel Box Cluster is a bright open cluster located approximately 5,600 light-years away in the constellation Scorpius. It appears in the region of the False Comet asterism and is visible to the unaided eye.| www.constellation-guide.com
Mimosa, Beta Crucis (β Cru), is a multiple star system located at a distance of 280 ly in the constellation Crux. It is one of the stars of the Southern Cross.| Star Facts
Imai, Delta Crucis (δ Cru) is a blue-white subgiant star located at a distance of 345 ly in the constellation Crux. It is one of the stars of the Southern Cross.| Star Facts
Gacrux, Gamma Crucis (γ Cru), is a red giant star located at a distance of 88.6 ly in the constellation Crux. It is one of the stars that form the Southern Cross.| Star Facts
Pegasus is a large constellation in the northern sky. Recognizable for the Great Square of Pegasus, the constellation represents the winged horse in Greek mythology.| www.constellation-guide.com
Alsephina, Delta Velorum Aa (δ Vel Aa), is the primary component in a triple star system located 80.6 ly away in the constellation Vela. It is one of the four stars that form the False Cross.| Star Facts
The False Cross is an asterism formed by four bright stars in the constellations Vela and Carina. Located in the far southern sky, the diamond-shaped pattern is often confused for the brighter Southern Cross.| www.constellation-guide.com
Carina is a constellation in the southern sky. It represents the keel of the ship Argo. It is home to Canopus, the second brightest star in the sky, and Eta Carinae, a massive star illuminating the Carina Nebula.| www.constellation-guide.com
Kornephoros, Beta Herculis (β Her), is a luminous yellow giant located 139 light years away in the constellation Hercules. Shining at magnitude 2.81, it is the brightest star in the constellation.| Star Facts
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
Vela is a constellation in the southern sky. It represents the sails of Argo Navis, the mythical ship of Jason and the Argonauts. The constellation contains the Vela Supernova Remnant, the Eight-Burst Nebula, and the Omicron Velorum Cluster| www.constellation-guide.com
Rigel (β Ori) is a blue-whlue-white supergiant star located 848 light-years away in the constellation Orion. It is the most luminous star within 1,000 ly of 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
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
Lepus is a northern constellation located just south of Orion. It contains the white supergiant Arneb, the famous variable star R Leporis (Hind's Crimson Star), the globular cluster Messier 79, and the Spirograph Nebula.| www.constellation-guide.com
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
Centaurus is a large constellation located in the southern celestial hemisphere. It is home to Alpha Centauri, the nearest star system to Earth, the bright galaxy Centaurus A, and the globular cluster Omega Centauri.| www.constellation-guide.com
Nihal (β Lep) is a yellow bright giant star located 160 light-years away in the constellation Lepus. With an apparent magnitude of 2.84, it is the second brightest star in Lepus, after Arneb| Star Facts
Hatysa (ι Ori) is the primary component in a multiple star system located 1,340 light-years away in the constellation Orion. It forms Orion’s Sword with 42 Orionis, Theta Orionis, and the Orion Nebula (M42).| Star Facts
Bellatrix, Gamma Orionis (γ Ori), is a main sequence star located at a distance of 250 ly in Orion constellation. Also known as the Amazon Star, it marks Orion's left shoulder.| Star Facts
Betelgeuse, Alpha Orionis (α Ori), is a red supergiant star and supernova candidate located 548 light-years away in the constellation Orion. Marking the Hunter's shoulder, it is one of the most recognizable stars in the night sky.| Star Facts
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
Andromeda is a large constellation in the northern sky. Associated with the mythical princess Andromeda, the constellation is home to the Andromeda Galaxy (M31), the Blue Snowball Nebula, and the NGC 68 Group of galaxies.| www.constellation-guide.com
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
Messier 42 (M42), the famous Orion Nebula, is an emission-reflection nebula located in the constellation Orion, the Hunter. With an apparent magnitude of 4.0, the Orion Nebula is one of the brightest nebulae in the sky and is visible to the naked eye. It lies at a distance of 1,344 light years from Earth and… Read More »Messier 42: Orion Nebula| 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
Spica's Spanker is a quadrilateral asterism formed by the brightest stars in Corvus. Also known as the Sail, the asterism appears near Spica, the brightest star in Virgo. It can be used to find the Sombrero Galaxy (M104) and the Antennae Galaxies (NGC 4038 and NGC 4039.| www.constellation-guide.com
Sadalsuud, Beta Aquarii (β Aqr), is a yellow supergiant star located 540 light years away in the constellation Aquarius. It is the constellation's brightest star, with an apparent magnitude of 2.87.| Star Facts
Lyra is a small constellation in the northern sky. It represents the lyre of Orpheus. The constellation is home to Vega, the second brightest northern star, and the Ring Nebula (M57), a famous planetary nebula.| www.constellation-guide.com
Vulpecula is a faint constellation in the northern sky. It represents the little fox. The constellation is home to the red giant Anser, the Dumbbell Nebula (M27), and as asterism known as the Coathanger.| 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
The Southern Cross is a bright, diamond-shaped asterism located in the far southern sky. Formed by the brightest stars of the constellation Crux, the asterism is commonly used to find the south celestial pole.| www.constellation-guide.com
The Winter Triangle, or the Great Southern Triangle, is an asterism formed by the bright stars Betelgeuse in Orion, Procyon in Canis Minor and Sirius in Canis Major constellation.| 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
Ursa Major, the Great Bear, is the largest constellation in the northern sky. It is home to the Big Dipper asterism, formed by its seven brightest stars, and to many well-known deep sky objects.| www.constellation-guide.com
Alpha Centauri (α Cen) is a triple star system located at a distance of 4.37 light years from Earth in the constellation Centaurus. It is the nearest star system to the Sun and hosts the nearest extrasolar planets to Earth.| Star Facts
Messier 27 (M27), also known as the Dumbbell Nebula, Diabolo Nebula or Apple Core Nebula, is a planetary nebula in Vulpecula. The Dumbbell Nebula is large in size and quite bright, which makes it a popular object among amateur astronomers. It can be seen in binoculars and small telescopes. The nebula covers an area of… Read More »Messier 27: Dumbbell Nebula| Messier Objects
Aquila, the Eagle, is a prominent northern constellation located near the celestial equator. It contains the bright Altair and the planetary nebulae NGC 6741 (the Phantom Streak Nebula) and NGC 6751 (the Glowing Eye Nebula).| www.constellation-guide.com
The Summer Triangle is a northern summer asterism formed by the brightest stars in the constellations Lyra, Aquila and Cygnus. It can be used to find some of the best-known nebulae in the sky.| www.constellation-guide.com
Vega (Alpha Lyrae) is a fast-spinning white main sequence star located 25.04 light-years away in the constellation Lyra. Shining at magnitude 0.026, it is the fifth brightest star in the sky. It forms the Summer Triangle with Altair and Deneb.| Star Facts
Alpheratz, Alpha Andromedae (α And), is a spectroscopic binary star located 97 ly away in Andromeda constellation. It marks the head of the mythical princess.| Star Facts
Messier 31 (M31), better known as the Andromeda Galaxy, is a large spiral galaxy located in the constellation Andromeda. Lying at a distance of 2.54 million light years from Earth, the Andromeda Galaxy is the nearest major galaxy to our own. It is on a collision course with our home galaxy, the Milky Way. Messier… Read More »Messier 31: Andromeda Galaxy| Messier Objects
Deneb (α Cyg) is a blue-white supergiant located 2,615 light-years from Earth in the constellation Cygnus. The luminous star forms the Summer Triangle with Vega and Altair.| Star Facts