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The Perseus Arm is a spiral arm of the Milky Way galaxy and stretches across the sky from the constellation Cassiopeia through Perseus and Auriga to Gemini and Monoceros. [66] This segment is towards the rim of the galaxy. [65] Within the Perseus Arm lie two open clusters (NGC 869 and NGC 884) known as the Double Cluster. [67]
The constellation Perseus the Champion is between Cassiopeia and the Pleiades star cluster. The Double Cluster appears here as three dots within the figure's head; Algenib, the brightest star is ...
Cassiopeia (listen ⓘ) is a constellation and asterism in the northern sky named after the vain queen Cassiopeia, mother of Andromeda, in Greek mythology, who boasted about her unrivaled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy , and it remains one of the 88 modern constellations today.
Cassiopeia (/ ˌ k æ s i. oʊ ˈ p iː. ə /; [1] Ancient Greek: Κασσιόπεια Kassiópeia, Modern Greek: Κασσιόπη Kassiópē) or Cassiepeia (Κασσιέπεια Kassiépeia), a figure in Greek mythology, was Queen of Aethiopia and wife of King Cepheus of Ethiopia. She was arrogant and vain, characteristics that led to her ...
The Perseus constellation group fills the northeastern sky. The W of Queen Cassiopeia is most striking. Her son-in-law Perseus below is home to one of the sky’s best but least-known star clusters.
After Andromeda's death Athena placed her in the sky as a constellation, to honor her. Three of the neighboring constellations (Perseus, Cassiopeia and Cepheus) represent characters in the Perseus myth, while Cetus retreats to beyond Pisces. [11] It is connected with the constellation Pegasus.
The 1981 film Clash of the Titans is loosely based on the story of Perseus, Andromeda, and Cassiopeia. In the film the monster is a kraken, a giant squid-like sea monster in Norse mythology, rather than the whale-like Cetos of Greek mythology.
The Heart Nebula (also known as the Running Dog Nebula, Sharpless 2-190) is an emission nebula, 7,500 light-years (2,300 pc) away from Earth and located in the Perseus Arm of the Galaxy in the constellation Cassiopeia. It was discovered by William Herschel on 3 November 1787. [1] It displays glowing ionized hydrogen gas and darker dust lanes. [2]