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
Piscis Austrinus is a small constellation in the southern sky. It represents the Southern Fish. It is home to Fomalhaut, one of the brightest stars in the sky.| www.constellation-guide.com
The Ghost of Jupiter (NGC 3242) is a planetary nebula located approximately 4,800 light years away in the constellation Hydra. With an apparent magnitude of 8.60, it can be observed in amateur telescopes.| www.constellation-guide.com
Hydra is the largest constellation in the sky. Located in the southern celestial hemisphere, the constellation contains the open cluster Messier 48, the Porpoise Galaxy (NGC 2936), and the Southern Pinwheel Galaxy (M83).| www.constellation-guide.com
Draco is one of the largest northern constellations. It represents the dragon Ladon in Greek mythology. The constellation is home to the Cat's Eye Nebula (NGC 6543), the Spindle Galaxy (M102), and the Tadpole Galaxy (Arp 188).| www.constellation-guide.com
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
The Cat’s Eye Nebula is a planetary nebula located 3,300 light-years away in the constellation Draco. Named for its intricate appearance, it was one of the first planetary nebulae to be discovered and is one of the most complex planetary nebulae known.| www.constellation-guide.com
The Blinking Planetary Nebula (NGC 6826, Caldwell 15) is a planetary nebula located approximately 2,000 light-years away in the northern constellation Cygnus. It appears in the region of the Swan's wing.| www.constellation-guide.com
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
Hercules is one of the largest constellations in the sky. Representing the mythical Greek hero, the constellation is home to the Hercules Globular Cluster (M13), the globular cluster Messier 92, and the Hercules Cluster of galaxies.| 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 Caldwell catalogue is a list of 109 bright deep sky objects that can be observed with amateur telescopes. It serves as a supplement to the Messier catalogue and includes deep sky objects in the far southern sky.| www.constellation-guide.com
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
The Turtle Nebula (NGC 6210) is a planetary nebula located approximately 5,400 light-years away in the northern constellation Hercules. It has an apparent magnitude of 9.30.| www.constellation-guide.com
Coma Berenices is a faint constellation in the northern sky. It is home to the Black Eye Galaxy (M64), the Needle Galaxy (NGC 4565), the grand design spiral galaxy Messier 100, and the bright nearby Coma Star Cluster.| 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
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
Fomalhaut, Alpha Piscis Austrini (α PsA), is a white main sequence star located 25 light-years away in the constellation Piscis Austrinus. Its hosts a planet, Dagon (Fomalhaut b), and is known for its vast debris disk.| 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
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
Ophiuchus, the Serpent Bearer, is a large constellation near the celestial equator. Representing the healer Asclepius in Greek mythology, the constellation is visible from both hemispheres.| www.constellation-guide.com
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
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
The life cycle of a star is the process of change in structure and composition that every star undergoes over time. It can last for a few million years or trillions of years, depending on the star’s mass.| Star Facts
Altair, Alpha Aquilae (α Aql), is a white main sequence star located 16.73 ly from Earth in the constellation Aquila. It forms the Summer Triangle with Vega and Deneb.| Star Facts