Delta Scuti (δ Sct) is a yellow-white giant located 201 light years away in the constellation Scutum. The star serves as the prototype for a class of variable stars known as the Delta Scuti variables.| Star Facts
Serpens is a large constellation in the northern sky. It represents the snake. It is divided into Serpens Caput (the serpent's head) and Serpens Cauda (the serpent's tail) by the constellation Ophiuchus.| www.constellation-guide.com
The Starfish Galaxy (NGC 6240) is an irregular galaxy located 351.9 million light years away in the constellation Ophiuchus. It is a remnant of the merger of three smaller galaxies.| www.constellation-guide.com
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
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
Robin’s Egg Nebula (NGC 1360) is a planetary nebula located in the southern constellation Fornax (the Furnace). It was discovered by the American astronomer Lewis Swift in 1859.| www.constellation-guide.com
The Spirograph Nebula (IC 418) is a planetary nebula located about 3,600 light years away in the constellation Lepus, just under Orion's feet. It was named for its elaborate pattern of shells and filaments that surround the bright central nebulosity.| www.constellation-guide.com
The Little Dipper is an asterism formed by seven bright stars in the constellation Ursa Minor, the Little Bear. It has historically played an important role in navigation because it includes Polaris, the North Star.| www.constellation-guide.com
The Northern Cross is a prominent asterism formed by the brightest stars in the constellation Cygnus. It appears in a rich Milky Way field and outlines the body of the celestial Swan.| www.constellation-guide.com
The Coathanger is an asterism located in the northern constellation Vulpecula (the Fox). With an apparent magnitude of 3.6 and an apparent size of 60 arcminutes, it is visible to the unaided eye.| www.constellation-guide.com
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
Argo Navis (the Ship Argo) is an obsolete constellation located in the southern sky. It was divided into three smaller constellations – Carina (the Keel), Puppis (the Stern) and Vela (the Sails) in the 18th century.| 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
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
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 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
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
Ara is a small constellation in the southern sky. It represents the altar. It contains the open clusters NGC 6193 and the Ara Cluster, the planetary nebula known as the Stingray Nebula, and the pre-planetary Water Lily Nebula.| 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
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
Lupus (the Wolf) is a southern constellation located between Scorpius and Centaurus. It hosts the historic supernova remnant SN 1006, the globular clusters NGC 5824 and NGC 5986, and the Retina Nebula (IC 4406).| 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
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
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
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
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
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
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
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
Zeta Ophiuchi (ζ Oph) is a hot blue star located 366 light-years away in the constellation Ophiuchus. It is the closest O-type to Earth. Shining at magnitude 2.57, it is the third brightest star in Ophiuchus.| Star Facts
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
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
Messier 97 (M97), also known as the Owl Nebula, is a famous planetary nebula located in Ursa Major constellation. The nebula lies at a distance of 2,030 light years from Earth and has an apparent magnitude of 9.9. It has the designation NGC 3587 in the New General Catalogue. Messier 97 occupies an area 3.4… Read More »Messier 97: Owl Nebula| Messier Objects
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
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