Sagittarius Zodiac Sign - Character traits - Greek Mythology Sakurais Object is a so-called born again star, one that was originally a white dwarf but swelled into a red giant as a result of a late thermal pulse and is expected to evolve back into a white dwarf. Sagittarius is symbolized by the centaur, half-human and half-horse beings in Greek mythology. Because the stars in globular clusters are ancient, their metallic abundances are much lower than more recently formed stars, such as the Sun. The cluster has an apparent magnitude of 9.5. The nebula was discovered by Edward Charles Pickering on July 14, 1880. Peony Star, or WR 102ka, is one of the most luminous stars known in our galaxy. Most likely, the primary component is an A type supergiant. Sagittarius is one of the constellations of the zodiac and is located in the Southern celestial hemisphere. This striking view of the globular star cluster Messier 55 in the constellation of Sagittarius (the Archer) was obtained in infrared light with the VISTA survey telescope at ESOs Paranal Observatory in Chile. Its name means divided into three lobes. LBV 1806-20, a candidate luminous blue variable (LBV) is one of the most luminous stars in our galaxy. The constellations Sagittarius and Centaurus are both supposed to represent a centaur, a creature with the upper torso of a man and the body and legs of a horse . It is 8.3 by 8.3 in diameter. It is also associated with Crotus, the satyr who kept company of the Muses on Mount Helicon. Image: ESO/J. Image: NASA, ESA, STScI, and G. Piotto (Universit degli Studi di Padova), and E. Noyola (Max Planck Institut fr extraterrestrische Physik). signal, the first and only radio signal ever received that indicated the possibility of extraterrestial intelligence. The cluster contains 18 RR Lyrae type variable stars. The myth behind Sagittarius actually refers to Crotus, a satyr that lived on Mount Helicon with the Muses. It is approximately 77.3 light years distant. It is good to remember the reason why Sagittarius is a centaur in the first place. Sagittarius is an astrological sign transitted by the Sun from approximately November 23rd to December 22nd. The cluster spans about 65 light years and occupies about 11 arc minutes of the apparent sky. Messier 75 is a globular star cluster about 67,500 light years from Earth. Upsilon Sagittarii is a spectroscopic binary star. Zeta Sagittarii is another binary star in Sagittarius. It has an apparent size of 4.75 by 4.75. A stars final moments are captured in this image from the NASA/ESA Hubble Space Telescope. Astronomers obtained this portrait of Barnards Galaxy using the Wide Field Imager attached to the 2.2-metre MPG/ESO telescope at ESOs La Silla Observatory in northern Chile. These same colours can be seen in the famous and impressive Ring Nebula (heic1310), a prominent example of a nebula like this one. The star is a relatively young one, with an estimated age of less than a billion years. Red Spider Nebula (NGC 6537), image: Judy Schmidt (CC BY 2.0). Image: NASA, ESA, and A. Sarajedini (University of Florida) Acknowledgement: Gilles Chapdelaine. The star is classified as a semiregular variable of the SRc type. Sigma Sagittarii is the second brightest star in the constellation Sagittarius. Chiron the centaur was brilliant and kind a teacher to figures like Jason and Achilles, and a friend to the hero Heracles (via Greek Mythology). In fiction, Rukbat is probably best known from Anne McCaffreys Dragonriders of Pern series of novels and stories. It was discovered by Italian astronomer Giovanni Battista Hodierna in 1654. Its inner elongated shape is believed to be the result of a fast wind of material travelling away from the hot 15th magnitude central star. With a mass of 10,000 solar masses, it is about 10 times more massive than typical open clusters in the Milky Way. The stars traditional name, Kaus Australis, comes from the Arabic word for bow (qaws) and the Latin word for southern (australis). Sagittarius constellation, Baades Window and the Teapot, photo: NASA, ESA, Z. Levay (STScI) and A. Fujii. It is a sparse cluster with an estimated age of only 7.5 billion years. The Trifid Nebula is a bright, colourful emission/reflection nebula in Sagittarius. Before that, Mercury occulted the star on December 5, 1865. This beautiful image features the globular star cluster M75. Most sources identify Sagittarius as Chiron, the son of the Titan Cronus, according to Globe at Night. It has about a third of the luminosity of the Eta Carinae binary system in the constellation Carina and is believed to radiate as much energy in 20 seconds as the Sun does in a year. NGC 6558 is a globular cluster that can be seen 1.5 degrees to the south-southeast of Gamma-2 Sagittarii. The cluster is about 67 light years in radius and has an apparent magnitude of 9.18. It is also notable for being one of only four known globular clusters that contain a planetary nebula. It is an eclipsing binary star, with a B8 supergiant star for a primary component and a B2 type giant as the companion star. What is atypical for a B8V class star is that Alpha Sagittarii is emitting an excess flux of X-rays, possibly because its companion star is still in the pre-main sequence stage. The star marks the base of the archers bow. It is classified as an irregular variable star, with an apparent magnitude varying from 4.51 to 4.65 with a period of about 20 days. This dazzling image shows the globular cluster Messier 69, or M69 for short, as viewed through the NASA/ESA Hubble Space Telescope. Chiron and Achilles. This giant cloud of gas and dust is creating intensely bright young stars, and is home to young stellar clusters. This image was taken using the FORS instrument, mounted on ESOs Very Large Telescope.

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