Io ( "EYE oh" ) is the fifth of Jupiter 's known satellites and the third largest; it is the innermost of the Galilean moons. ... Discovered by Galileo and Marius in 1610. ... Io's surface is radically different from any other body in the solar system. ... The material erupting from Io's vents appears to be some form of sulfur or sulfur dioxide. ... Analysis of the Voyager images led scientists to believe that the lava flows on Io's surface were composed mostly of various compounds of molten sulfur. ...

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• Ganymede
• Callisto
• Europa

... B efore the Galileo encounters with Ganymede it was thought that Ganymede and Callisto were composed of a rocky core surrounded by a large mantle of water or water ice with an ice surface (and that Titan and Triton were similar). ... G anymede's surface is a roughly equal mix of two types of terrain: very old , highly cratered dark regions (left), and somewhat younger (but still ancient) lighter regions marked with an extensive array of grooves and ridges (right). ... Callisto .. ...

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• Jupiter's Moon Ganymede
• Callisto
• Europa

Ganymede . ... Ganymede Statistics . ... Hubble Finds Ozone on Jupiter's Moon Ganymede . ... Like Callisto , Ganymede is most likely composed of a rocky core with a water/ice mantle and a crust of rock and ice. ... Ganymede's mantle is most likely composed of ice and silicates, and its crust is probably a thick layer of water ice. ... Ganymede's surface is rich in water ice and Voyager and Galileo images show features which are evidence of geological and tectonic disruption of the surface in the past. ...

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• Saturn's Moon Enceladus
• Galileo Returns New Insights into Callisto and Europa
• New Discoveries From Galileo

Giant Jupiter. Jupiter . ... Jupiter has no solid surface that is why speaking about its dimensious point the radius of the upper border line of the clouds, where the presseru is about 10 KPa; radius of Jupiter on the equator is 71400 km. ... The Jupiter satellites. ... Nowadays 16 satellites of the Jupiter are known: Adrastea, Mitis, Amaltea , Phina,then 4 Galilei satellites: Io , Europe , Hanimed , Callisto , Leda, Aimalia, Zicitea, Elara, Ananke, Carme, Pasipe and Sinope. ... Jupiter's ring. ...

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... In summer 1994, the biggest news in astronomy was the collision of comet Shoemaker-Levy 9 with Jupiter. During this school year, Jupiter will charge back into the limelight with the arrival of the Galileo spacecraft (see figure 8 ). On Dec. 7, following a tortuous six-year ramble through the solar system, Galileo will begin its two-year mission studying Jupiter and its gaggle of moons. ... Besides the camera, Galileo will carry instruments capable of identifying minerals on Jupiter's moons. ...

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• ASP: Good Astronomy Activities on the WWW

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Site Info . ... It is from from Voyager 1 and shows a whopping big impact crater dominating the profile of the moon. Note that Mimas is about 400 kilometers across (about 250 miles). ... The wall around the crater is 5 kilometers high, and that central peak rises 6 kilometers above the surface (many impact craters have a large central peak which is caused by a pressure rebound from the impact). ... 2008 Phil Plait. ...

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... Black Hole Signature From Advective Disks . ... If alone, a black hole would indeed appear quite black, but many black hole candidates are part of binary star systems. So how does a black hole binary system look different from a neutron star binary system? ... Sunspots: Magnetic Depressions . ... Our Sun has spots! These spots appear dark in photographs like the one above, but in fact sunspots are quite bright - they are just dark compared to the rest of the Sun. ... Blue Sun Glaring . ...

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... Magnetic fields, subatomic particles, etc., traveling in different directions fill the universe. Do they deflect or otherwise affect one another? If so, isnт??t the information we get from them distorted? ... Neutrino astronomy, which is still in its infancy, is attractive because neutrinos interact so weakly with matter that few of these distorting effects occur. Get instant access to subscriber content on Astronomy.com! ...

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• What can astronomers tell us about the different colors on the surface of
• Does the time it takes different methods to create all the elements coincide
• Why do some stars appear to flash a variety of different colors when you look

NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Astronomy . ... Visitor Center . ... Planetary Radar . ... A program of delay-Doppler mapping of the Galillean satellites is underway by L. Harcke and colleagues at Stanford University. The surfaces of Europa, Ganymede and Callisto have been imaged in order to determine the surface properties and look for different radar properties of the various terrain types. These maps will be correlated with the Galileo images of the satellites.€а . ...

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• Planetary Radar at Arecibo Observatory

Astronotes Armagh Planetarium's Stellar Blog! ... Planets . ... Monthly Sky Notes . ... October . ... By admin October 8, 2010 Posted in: Monthly Sky Notes . A giant from close up: an image made using data from the Cassini probe which flew past Jupiter in 2000. ... As it is so far from us, it takes JupiterтАЩs light a significant time to reach us тАУso when you see Jupiter tonight you are seeing it as it was 35€а minutes in the past. ... Posted October 12, 2010 at 11:15 PM . ... Astronotes . ...

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• Jupiter | Astronotes - Part 2
• Exploring Icy Moons in Search of Life | Astronotes
• Christmas Card Competition Winners: Images of the Month | Astronotes

FAMILIES AND SCATTERING . ... An important observation on the orbital distribution of irregular satellites is that satellite families at Saturn, Uranus and Neptune are not well defined. At Jupiter one finds 3-4 reasonably compact retrograde families, corresponding to each of the previously known retrograde irregulars and one prograde family. ... That is contrary to the current doctrine that very little has happened to these irregular satellite families following their collisional formation. ...

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• Taurid Complex
• Armagh Observatory
• Jupiter animation | International Year of Astronomy in Ireland | Astronomy 2009

... Magnetic Storms . ... The Earth's own magnetic field is probably created in the Earth's core, believed to contain molten iron, by a "fluid dynamo" . ... Jupiter . ... The magnetospheres of the giant planets differ from the Earth's in at least four ways. ... If Jupiter's magnetosphere has the same proportions, the solar wind would need 2-3 days to cover the corresponding distance (equal to about half the Earth-Sun distance!), during which the planet might have rotated 5-7 times around its axis. ...

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• Polar Orbiting Satellites
• The Io Dynamo
• Planetary Magnetism

... Fortranљ66 . ... Fixed form . ... Whole Fortranљ66 . ... Continuation line indicated in column 6 . ... Blank line as comment . ... Extension in Unix .f .f .f .f90 .f .f90 . Extension in DOS .FOR .FOR .FOR .F90 .FOR .F90 . ... This applies to both fixed form and free form source code. ... Fixed form of the source code is discouraged in Fortran 95! ... In UNIX there is no concept called extension, and the extensions are not specified in the Fortran standard, but in informal manufacturer standards. ...

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• Publication List

Extended ephemerides of NEAs and some unusual minor planets listed in the Table on p. 5731 (Jupiter-crossers, Jupiter-approachers, some unusual Mars-crossers) are presented on p. 23099 – 23489. At the end of the Table special index is placed which indicates page numbers where the ephemerides of different planets are given. ...

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• Keywords_75

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Astrophysics graduate student programs . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Radio emission from Jupiter was first serendipitiously discovered at decametric wavelengths by Franklin and Burke in 1955. ...

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• Southern Cross Astrophysics Conference Series
• Pulsar Group Main/Images
• Polarization/Stokes Handling (stokes and select)

Crater Gassendi . ... I made this drawing was made on the 26th of november 2001. If you compare this one with the previous drawing of Gassendi (below) the differences are clear. ... This drawing was made on the 28th of september 2001. After nearly a full month without observations I had a one hour gap between the thicker clouds. ... This drawing was made on the 29th of august 2001. ... This drawing was made on the 27th of august 2001. ... This drawing was made on the 25th of august 2001. ...

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Name Last modified Size Description . Parent Directory - 20111107/ 2011-11-15 16:04 - . Apache/2.4.6 (Linux/SUSE) Server at www.astro.louisville.edu Port 80

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• Index of /shared_skies/archive/select/planets/jupiter/satellites/20111107
• Index of /shared_skies/archive/select/planets/jupiter/20101005
• Index of /shared_skies/archive/select/planets/jupiter/20121110

... Chapter 4: Solar System Targets > 4.2 Target Identification . ... The following information is required to identify and classify each target. ... For example, separate targets should be defined if you plan to take spectra of several different surface features on a planet, or if you plan to observe the same feature with different timing constraints. ... Description . PLANET . If the target is the center of a planet, enter PLANET followed by its name (e.g., PLANET JUPITER , PLANET SATURN ). ...

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• A Compact Instrument to Detect and Study Seismological Doppler Signals from
• Supersonic Motions in the Upper Atmosphere of Jupiter Detected at Ly- with GHRS
• Polarizer Quad Filter

. ATMOSPHERIC INFLUENCE ON THE DIFFERENT RADIO-ENGINEERING . SYSTEM FUNCTIONING . The calculations of the atmospheric impact on terrestrial and satellite communication links with frequencies above 10 GHz using the ITU-R data bank. The correction of the Earth cover optical images obtained from the satellite/ . The Earth atmospheric influence on the radiowave propagation parameters in wide frequency range (from SLF to UV). Contact e-mail: . Pozhidayev Victor, Ph.D - vic@cplire.ru . © IRE RAS 1996-20 11

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. The XMM-Newton website has moved to the following location: . http://www.cosmos.esa.int/web/xmm-newton

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• Different types of detector map
• Radiation Hardness
• Using a parameter file