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
Denebola, Beta Leonis (β Leo), is a white main sequence star located at a distance of 35.9 light years from Earth in the constellation Leo. It marks the Lion's tail.| Star Facts
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
Boötes (the Herdsman or Plowman) is a large northern constellation dominated by a kite-shaped asterism. The constellation is home to Arcturus, the brightest northern star, and the contrasting double star Izar.| www.constellation-guide.com
Crux is the smallest and most distinctive constellation in the southern sky. Recognizable for the Southern Cross, formed by its brightest stars, it is home to the dark Coalsack Nebula and the Jewel Box Cluster (NGC 4755).| www.constellation-guide.com
Cassiopeia is a prominent constellation in the northern sky. Recognizable for its W shape, the constellation is home to the Heart Nebula, the Soul Nebula, the Pacman Nebula, and the open clusters Messier 52 and Messier 103.| www.constellation-guide.com
Puppis is a constellation located in the southern hemisphere. Home to many notable stars, it represents the stern of the ship Argo, on which Jason and the Argonauts sailed to get the Golden Fleece.| www.constellation-guide.com
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
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
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
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
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
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
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
The nearest stars to the Sun include some of the brightest stars in the sky, but the majority of the 100 nearest stars are faint red dwarfs, like our nearest neighbour Proxima Centauri.| Star Facts
Spica, Alpha Virginis (α Vir), is a blue-white spectroscopic binary star located at a distance of 250 light years from Earth in the constellation Virgo.| 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
Achernar, Alpha Eridani (α Eri), is a rapidly rotating star located 139 ly from Earth in Eridanus constellation. It is 3,150 times more luminous than the Sun.| Star Facts
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
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
Caph, Beta Cassiopeiae (β Cas) is a white giant star located at a distance of 54.7 light years from Earth in the constellation Cassiopeia. It is the rightmost star of Cassiopeia's W.| Star Facts
Antares, Alpha Scorpii (α Sco) is a red supergiant and supernova candidate located at a distance of 550 ly from Earth in the constellation Scorpius. It is the brightest star in Scorpius and one of the brightest stars in the sky.| Star Facts
Hadar, Beta Centauri (β Cen), is a triple star system located at a distance of 390 light years from Earth in the southern constellation Centaurus.| Star Facts
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
Greek constellations are the 48 ancient constellations listed by the Greek astronomer Claudius Ptolemy in his Almagest in the 2nd century CE. Most of them are associated with stories from Greek mythology.| www.constellation-guide.com
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