Cepheus and Cassiopeia were placed next to each other among the stars, along with Andromeda. Cassiopeia was the wife of King Cepheus of Aethiopia and mother of Princess Andromeda. The constellation is named after Cassiopeia, the queen of Aethiopia. IC 10 is an irregular galaxy that is the closest known starburst galaxy and the only one in the Local Group of galaxies.Ĭassiopeia in her chair, as depicted in Urania's Mirror A rich section of the Milky Way runs through Cassiopeia, containing a number of open clusters, young luminous galactic disc stars, and nebulae. Fourteen star systems have been found to have exoplanets, one of which- HR 8832-is thought to host seven planets. Cassiopeia A is a supernova remnant and the brightest extrasolar radio source in the sky at frequencies above 1 GHz. In 1572, Tycho Brahe's supernova flared brightly in Cassiopeia. The constellation hosts some of the most luminous stars known, including the yellow hypergiants Rho Cassiopeiae and V509 Cassiopeiae and white hypergiant 6 Cassiopeiae. In the (sub)tropics it can be seen at its clearest from September to early November, and at low southern, tropical, latitudes of less than 25°S it can be seen, seasonally, low in the North.Īt magnitude 2.2, Alpha Cassiopeiae, or Schedar, is generally the brightest star in Cassiopeia, though it is occasionally outshone by the variable Gamma Cassiopeiae, which has reached magnitude 1.6. It is easily recognizable due to its distinctive ' W' shape, formed by five bright stars.Ĭassiopeia is located in the northern sky and from latitudes above 34°N it is visible year-round. 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. Visible at latitudes between + 90° and − 20°.īest visible at 21:00 (9 p.m.) during the month of November.Ĭassiopeia ( listen) is a constellation in the northern sky named after the vain queen Cassiopeia, mother of Andromeda, in Greek mythology, who boasted about her unrivaled beauty. for the constellation also / ˌ k æ s i ˈ oʊ p i ə/ Cássiópeia Perseus defeated the monster, saved Andromeda and married her./ ˌ k æ s i ə ˈ p iː ə, - s i oʊ-/ Cássiopéia,Įsp. Mercilessly Andromeda was tied to a rock next to the sea, where she had to wait for the monster to come and eat her alive. According to an oracle the country could only be freed from the curse if Andromeda, the only child of the royal family, would be sacrificed to the sea monster. The Nereids complained to the sea god Poseidon about this insult, who sent out the sea monster Ketos, that devastated the shores of the country. Cassiopeia had claimed to be more beautiful than even the Nereids, aquatic goddesses of Greek mythology. The Ethiopian king Cepheus and his wife Cassiopeia had committed the sin of vanity. It shows the peak in the mid west in the direction of the north polar star - so you can easily find this constellation in the sky.īrightest star: Alpha Cassiopeiae (Schedir) The five main stars of this constellation form a "W" form. These elements may form new planets, stars or even some living organisms in the future. The material has since continued to expand into a giant shell containing a lot of elements including oxygen. The matter emitted in the explosion was scattered into space at a few percent of the light speed. The Cassiopeia A exploded about 300 years ago and the explosion has been witnessed from Earth. The Cassiopeia has produced two supernovas, one of those is known as the Cassiopeia A. The Cassiopeia is visible throughout the year, although the best time to see it is in November. The Cassiopeia is a constellation of the northern sky.
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