... 2010 November 29 . Dark Belt Reappearing on Jupiter . Credit: NASA's JPL , U. Oxford , UC Berkeley , Gemini Obs. ... Explanation: Why are planet-circling clouds disappearing and reappearing on Jupiter? ... Earlier this year, unexpectedly, Jupiter's dark Southern Equatorial Belt (SEB) disappeared. ... Detailed professional observations revealed that high-flying light-colored ammonia -based clouds formed over the planet-circling dark belt. ... About APOD | ... A service of: ASD at NASA / GSFC . ...

... Dark Volcano Active on Io . ... 10.11.1997 . ... The inset frame of Jupiter 's most active moon was taken by the robot spacecraft Galileo in April. ... The new large black spot reveals that a volcano named Pillan Patera has been erupting during the interim. A vast moonscape roughly the size of Arizona has just been covered by some dark material. ... Publications with keywords: Jupiter - Io - volcano . Publications with words: Jupiter - Io - volcano . ... Jupiter s Clouds from New Horizons . ...

home publications > mercury . ... Astronomy Beat . ... Nearly four centuries ago, Galileo's simple observations of Earth's planetary sibling, Venus, buoyed the proponents of a Copernican universe. ... The Italian astronomer had settled into a new house in Florence and had begun to observe Venus, which in November 1610 would have appeared as an evening star, bright in the western sky after dusk. ... From these two observations, Galileo inferred that Venus must orbit closer to the Sun than does Earth. ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... active galactic nuclei . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

Recent Changes - Search : . VLBI Schedule . LBA Home Page . ... Attendance: Cormac Reynolds, Hayley Bignall, John Morgan, Hayden Rampadarath, Divya Palaniswamy (Curtin); Shaun Amy, Tasso Tzioumis, Chris Phillips, Yiannis Gonidakis (CASS Marsfield); Jamie McCallum , Brett Reid, Simon Ellingsen, Stas Shabala ( UTas ); Jamie Stevens (CASS Narrabri); Oleg Titov (GA); Shinji Horiuchi (CASS Tid); Tim Natush (AUT) . ... ATNF . ... Copy LBA data archive from Curtin to ATNF (Curtin, Chris) continuing . ...

... Sun images . ... Active areas . November : 2015 . ... The following regions with sunspots can be now observed on the Sun's surface . Group number . ... Group length (in degrees) . ... Beta . ... Coordinates and other characteristics of active regions are issued for November 09, 2015 00:31 UT The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates and other characteristics of active regions are issued for November 09, 2015 00:31 UT . ...

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

Ice Volcanoes Reshape Europa's Chaotic Surface . Ice-spewing volcanoes and the grinding and tearing of tectonic plates have reshaped the chaotic surface of Jupiter's frozen moon Europa, images from NASA's Galileo spacecraft reveal. ... Although the images do not show currently active ice volcanoes or geysers, they do reveal flows of material on the surface that probably originated from them, said Galileo imaging team member Dr. Ronald Greeley of Arizona State University, Tempe. ... Europa . ...

HUBBLE SPACE TELESCOPE DAILY REPORT #2169 PERIOD COVERED: 0000Z (UTC) 07/20/98 - 0000Z (UTC) 07/21/98 Daily Status Report as of 202/0000Z 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed FOC/96/WF/PC-2 7274 (Secular Changes in the Jet of M-87) The Faint Object Camera (f/96) and the WF/PC-2 were both used to make observations of the secular changes in the jet coming off of the active galactic nuclei of galaxy M-87. ... The observations were completed as planned, and no anomalies were reported. ...

... They had expected to see impact craters like those on the other terrestrial bodies and from their number per unit area to estimate the age of Io's surface. ... This may have been the most important single discovery of the Voyager missions; it was the first real proof that the interiors of other "terrestrial" bodies are actually hot and active. ... A nalysis of the Voyager images led scienties to believe that the lava flows on Io's surface were composed mostly of various compounds of molten sulfur. ...

... We have measured radio flux densities of BL Lacertae ( B2200+420 ) with the RATAN-600 radio telescope at 4.8, 7.9, 11.2 and 21.7 GHz during 6 October - 20 November, 2012 to study the detected ( ATel #4557, #4565, and #4568 ) flare. ... On 12 November flux density had notably risen to 8.30 +/- 0.19 Jy at 7.7 GHz, to 9.86 +/- 0.09 Jy at 11.2 GHz and to 11.70 +/- 0.3 Jy at 21.7 GHz. ... The spectral index changed from -0.08 +/- 0.02 to +0.23 +/- 0.02 at 11.2-21.7 GHz for October to November flux points...