Triangulum is a small constellation in the northern sky. Its name is Latin for "triangle", derived from its three brightest stars, which form a long and narrow triangle. Known to the ancient Babylonia
The constellation Triangulum as it can be seen by the naked eye.
The peculiar asymmetry of NGC 949.
The constellation Triangulum showing the IAU boundaries, the constellation stick figure, and labels for its brightest stars. Astrophotograph by Eckhard Slawik, from NOIRLab's 88 Constellations project.
Perseus is a constellation in the northern sky, named after the Greek mythological hero Perseus. It is one of the 48 ancient constellations listed by the 2nd-century astronomer Ptolemy, and among the
Triangulum
…in the 1920s. A small constellation, Triangulum is bordered by Andromeda to the north and west, Pisces to the west and south, Aries to the south, and Perseus to the east. The centre of the constellation lies halfway between Gamma Andromedae and Alpha Arietis. The three-letter abbreviation for the constellation…
Perseus carrying the head of Medusa the Gorgon, as depicted in Urania's Mirror, a set of constellation cards published in London c.1825
The constellation Perseus as it can be seen by the naked eye
The Double Cluster (NGC 869 and NGC 884)
NGC 1333, a nebula in the Perseus molecular cloud featuring glowing gases and pitch-black dust stirred up and blown around by several hundred newly forming stars embedded within the dark cloud.