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
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
Menkent, Theta Centauri (θ Cen), is an orange giant star located at a distance of 58.8 light years from Earth in the constellation Centaurus.| Star Facts
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
Centaurus A is a peculiar galaxy located in the southern constellation Centaurus. It is the fifth brightest galaxy in the night sky, the nearest giant galaxy to the Milky Way, and one of the nearest radio galaxies to Earth.| 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
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
Gamma Centauri (γ Cen) is a binary star system located 130 light-years away in the constellation Centaurus. The system has the traditional name Muhlifain. It is the fourth brightest point of light in Centaurus.| Star Facts
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
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
Segin (ε Cas) is a blue-white star located at a distance of 410 light years from Earth in the constellation Cassiopeia. It is the leftmost star of Cassiopeia's W.| Star Facts
Omega Centauri (Caldwell 80, NGC 5139) is the largest and most massive globular cluster in the Milky Way galaxy. With an apparent magnitude of 3.9, the cluster is easily visible to the unaided eye.| www.constellation-guide.com
The W-shaped asterism formed by the five brightest stars of Cassiopeia is one of the most familiar features of the northern night sky. It is used to find the Heart and Soul Nebulae, the Double Cluster, the open clusters M52 and M103, and many other deep sky objects.| 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 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
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
Rigil Kentaurus, Alpha Centauri A (α Cen A), is a Sun-like yellow main sequence star located at a distance of 4.37 light years from Earth in the constellation Centaurus. It is the primary component of Alpha Centauri, the nearest star system to the solar system.| 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
The list of the 300 brightest stars in the night sky, along with the stars' Bayer designations, apparent magnitudes, distances, and spectral types.| 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
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