Slide 1Slide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Slide 18Slide 19Slide 20Slide 21Slide 22Slide 23Slide 24Slide 25Slide 26Slide 27Slide 28The Solar System MissionsAstronomers discover 'new planet' Astronomers have detected what could be the Solar System's 10th planet. It was first seen by astronomers using California's Palomar Observatory, and has been given the name "Sedna" after the Inuit goddess of the ocean. Observations show it measures about 1,180-2,360km (730-1,470 miles) across, making it similar in size to Pluto. Astronomers now say they have evidence that Sedna has its own moon, although this needs to be confirmed, and is also very red in colour. There is likely to be some debate about whether it qualifies as a true planet, but some scientists are already saying it re-defines our Solar System. BBC News – March 15, 2004Astronomers discover 'new planet' - Sedna March 15, 2004What’s New??NEW YORK (AP) -- One of the nation's leading science museums has quietly shaken up the universe by suggesting that Pluto is not necessarily a planet at all but just a lump of ice. The startling suggestion comes from scientists at the Rose Center for Earth and Space, which opened last year at the American Museum of Natural History in New York.Comparative Planetology – Dwarf Planets Pre June 2008NameNameCeresCeresPlutoPlutoErisErisClasification Dwarf Planet Dwarf Planet Dwarf PlanetDiameter (km)Diameter (km)975 x 909975 x 9092306230624002400Mass compared to earthMass compared to earth.00016.00016.0022.0022.0027.0027Radius compared to earthRadius compared to earth.0738.0738.180.180.19.19Date of DiscoveryDate of Discovery01/01/180101/01/180102/18/193002/18/193001/05/200501/05/2005Comparative Planetology – Plutoids and Dwarf Planets Post 2008NameNameCeresCeresPlutoPlutoErisErisMakemakeMakemakeHaumeaHaumeaClasification Dwarf PlanetPlutoid Accepted as Plutoid*Accepted as Plutoid*Accepted as Plutoid*Diameter (km)Diameter (km)975 x 909975 x 90923062306240024001500150011501150Mass Mass compared to compared to earthearth.00016.00016.0022.0022.0027.0027.0007.0007.00074.00074Radius Radius compared to compared to earthearth.0738.0738.180.180.19.19.23.23.18.18Date of Date of DiscoveryDiscovery01/01/180101/01/180102/18/193002/18/193001/05/200501/05/200503/31/0503/31/0512/28/0412/28/04* Unclear if is in hydrostatic equilibriumComparative Planetology – Plutoids and Dwarf Planets Post 2008NameNameCeresCeresPlutoPlutoErisErisMakemakeMakemakeHaumeaHaumeaClasification Dwarf PlanetPlutoid Accepted as PlutoidAccepted as PlutoidAccepted as PlutoidDiameter (km)Diameter (km)975 x 909975 x 90923062306240024001500150011501150Mass Mass compared to compared to earthearth.00016.00016.0022.0022.0027.0027.0007.0007.00074.00074Radius Radius compared to compared to earthearth.0738.0738.180.180.19.19.23.23.18.18Date of Date of DiscoveryDiscovery01/01/180101/01/180102/18/193002/18/193001/05/200501/05/200503/31/0503/31/0512/28/0412/28/04Beyond a doubt, more to come (there are many candidates)…Comparative Planetology – Plutiods and Dwarf PlanetsComparative Planetology – Plutoids and Dwarf PlanetsNote: 2003 UB313 is now called ErisCeresGoddess of Plants (Roman)Discovered: 01/01/1801Classification: Dwarf PlanetRemains classified as a Dwarf Planet, and is believed to be the only object of its kindCeresThe International Astronomical Union has reclassified Ceres, the first asteroid to be discovered (and the largest and most massive object in the asteroid belt between Mars and Jupiter), as a "dwarf planet". Ceres was discovered on January 1, 1801 (technically the first day of the 19th Century) by Giuseppe Piazzi at Palermo, Sicily. He named it after Ceres, the Roman goddess of agriculture and grain.Ceres was originally considered a planet, but when dozens of asteroids came to be discovered, it was reclassified in an asteroid. (I have an astronomy guide from the 1830s that lists 11 planets, the seven from Mercury to Uranus, plus Ceres, Pallas, Juno, and Vesta, the first four asteroids to be discovered.) I took this photo with a Canon Digital Rebel in late July when Ceres was in the constellation Piscis Austrinus; Ceres is between the marks at upper right. CommentsCeresPlutoPluto was discovered in 1930. Pluto's satellite Charon was discovered in 1978. Pluto is a low-density planet made up of 97% nitrogen. The combined mass of Pluto and Charon is 450 times less than Earthís mass. It rotates once every 6.39 Earth days and it revolves around the sun for 247.7 Earthís years. As of 2011 – Pluto is now known to have 4 objects in orbit around it. The moons are Charon, Nix, Hydra and P4 (newest, still to be named as of 07/21/11Discovered: 02/18/1930PlutoRuler of the DeadPluto is known as the ruler of the dead and lives in the underworld and his name Pluto meant the giver of wealth since many precious gems and metals were found were he lived. His Greek name is Hades, which means the unseen. He owns a giant three-headed dog that guards the gates of the underworld. There is a myth of how Hades got his wife. When Hades got bored of the underworld, he wanted a wife. So he went up to earth to kidnap Persephone, the daughter of Demeter. When Demeter found out that her daughter was kidnapped, she became furious and went up to Jupiter. After a while, Jupiter decided that six months, Persephone would spend time with her mother, and another six months she would become queen of the dead. Whenever Persephone went down to the underworld, Demeter would be said and her tears would be the falling leaves of autumn. She would be so sad that all the crops would stop growing and everything would turn cold. When she saw Persephone, she would happy again and everything would come back to life, this is the mythological theory of the seasons. Pluto has a helmet of darkness that made him invisible during battle. In astrology, Pluto rules your private life.PlutoPluto Facts Sheet:Classification: PlutoidMass of planet (Earth=1) = 0.002Mean density (grams/centimeter³ ) = 2.03Interior: Ice?? Surface: Water:Atmosphere: mostly nitrogen gas, just like that of the Earth and Saturn's moon Titan, with the addition of carbon monoxide (CO - what comes out of your car) and methane (CH4). Moons: 4PlutoThis is the clearest view of Pluto and its satellite Charon seen by the Hubble Space Telescope and taken by the European Space Agency's Faint Object Camera on February 21,
View Full Document
Unlocking...