![]() ![]() Astronomers believe the meteors are caused by a comet.Astronomers used the James Webb Space Telescope to observe the first asteroid belt seen outside of our solar system and unveiled some cosmic surprises along the way. These meteors are very slow-moving, with a velocity of about 17 kilometers per second. In early December, the December Phi Cassiopeiids form a meteor shower that originates from the constellation. It is the closest starburst galaxy and the only one identified to-date in the Local Group. Tycho's Supernova Remnant (3C 10): 3C 10 is the remains of the supernova of Tycho's Star, observed by Tycho Brahe in 1572. ![]() NGC 663: This is a prominent open cluster.NGC 457 (Caldwell 13): This open cluster is also known as the E.T.NGC 147 (Caldwell 17): NGC 147 is an elliptical galaxy with a magnitude of 9.3.NGC 185 (Caldwell 18): NGC 185 is an elliptical galaxy with a magnitude of 9.2.The White Rose Cluster (NGC 7789): NGC 7789 is an open cluster in which loops of stars resemble rose petals.The Pacman Nebula (NGC 281): NGC 281 is a large gas cloud that resembles the video game character.The supernova became visible about 300 years ago. Cassiopeia A: Cassiopeia A is a supernova remnant and brightest radio source outside our solar system.Messier 103 (NGC 581): This is an open cluster containing about 25 stars.Messier 52 (NGC 7654): This is a kidney-shaped open cluster.NASA/JPL-CaltechĬassiopeia contains interesting deep sky objects: Other major stars include Achird (a yellow-white star similar to the Sun), Zeta Cassiopeiae (a blue-white subgiant), Rho Cassiopeiae (a rare yellow hypergiant), and V509 Cassiopeiae (a yellow-white hypergiant).Ī false color image of Cassiopeia A (Cas A) using observations from both the Hubble and Spitzer telescopes as well as the Chandra X-ray Observatory. Caph (magnitude 2.28): Caph is a yellow-white variable star that is about 28 times brighter than the Sun.Schedar (magnitude 2.24): Schedar is an orange giant, suspected to be a variable star.Gamma (magnitude 2.47): The central star in the "W" is a blue variable star.Ruchbah (magnitude 2.68): Ruchbah is actually an eclipsing binary star system.Segin (magnitude 3.37): Segin or Epsilon Cassiopeiae is a bright blue-white B-class giant star that is about 2500 times brighter than the Sun.From left to right, when viewed as a "W," these stars are: The "W" shape of Cassiopeia the Queen is formed by five bright stars, all visible to the naked eye. © Roger Ressmeyer/Corbis/VCG / Getty Images However, other depictions show Cassiopeia on a throne unchained, holding a mirror or palm frond.įorming an expanded W across the image are Segin, Ruchbah, Cih (at center), Schedar, and Caph. Perseus is to the southeast.Īs punishment for her vanity, Cassiopeia is forever chained to a throne. Cepheus is to the north and west of Cassiopeia. At the wedding, Perseus killed Andromeda's betrothed (her uncle Phineus).Īfter their deaths, the gods placed members of the royal family near each other in the heavens. However, the hero Perseus, fresh from beheading the Gorgon Medusa, saved Andromeda and took her as his wife. The oracle told them the only way to appease Poseidon was to sacrifice their daughter, Andromeda.Īndromeda was chained to a rock near the sea, to be devoured by the sea monster Cetus. To save their kingdom, Cepheus and Cassiopeia sought the counsel of the Oracle of Apollo. Nereus took the insult to the god of the sea, Poseidon, who rained his wrath down upon Ethiopia. The vain queen boasted that she or her daughter (accounts vary) were more beautiful than the Nereids, sea nymph daughters of the sea god Nereus. In Greek mythology, Cassiopeia was the wife of King Cepheus of Ethiopia. Cassiopeia is depicted as a queen sitting on a throne, sometimes holding a mirror or palm frond.
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