Polaris
Polaris (α UMi), the North Star, is a yellow supergiant located 446 light-years away in the constellation Ursa Minor. The star is part of the Little Dipp| Star Facts
The Cave Nebula (Sh2-155, Caldwell 9) is an emission nebula located approximately 2,400 light-years away in the northern constellation Cepheus. With an apparent magnitude of 7.7, it can be observed in medium telescopes.| www.constellation-guide.com
The largest stars in the known universe, listed here, are mostly cool red supergiants and hypergiants. Their radii are notoriously difficult to measure for several reasons.| Star Facts
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
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
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
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
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
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
Perseus is a large constellation located in the northern sky. Associated with the story of Perseus in Greek mythology, the constellation hosts the radiant of the Perseid meteor shower.| www.constellation-guide.com
Polaris (α UMi), the North Star, is a yellow supergiant located 446 light-years away in the constellation Ursa Minor. The star is part of the Little Dipp| Star Facts
The list of all the named stars (stars with names that have been formally approved by the IAU), with name origins and etymologies explained.| 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
Alderamin, Alpha Cephei (α Cep), is a white main sequence star located at a distance of 49.05 light years from Earth in the constellation Cepheus.| Star Facts
Mira, Omicron Ceti (ο Cet), is a red giant star located at a distance of 300 ly from Earth in the constellation Cetus. It is a pulsating variable star and a prototype for its own class, known as the Mira variables.| 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
