... Bad Astronomy . ... Bitesize Astronomy . ... Have you ever looked at pictures of Saturn's rings and noticed what look like gaps in the rings? ... Gian Domenico Cassini discovered a large gap in Saturn's rings in 1675. Later, an astronomer named Encke discovered a smaller gap near the edge of the rings. ... It was found long ago that an orbit in the Cassini Division, as the large gap is named, has a period almost exactly one-half that of one of Saturn's moons named Mimas. ... 2008 Phil Plait. ...

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... Дни открытых дверей к юбилею САО РАН (12-14 апреля 2016 г.) . Международная конференция "Dark Ages and White Nights (Spectroscopy of the CMB)" (20-24 июня 2016 г.) . ... Международная конференция MULTI-SPIN GALAXIES - 2016 (26-30 сентября 2016 г.) . Международная астрономическая конференция "Физика звезд: от коллапса до коллапса" (3-7 октября 2016 г.) Архив . ... Подробнее.. ... 10.02.16 . ... БТА в реальном времени . ... Цейсс-1000 в реальном времени . ... Последнее обновление: 22/03/2016 ...

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... Cassini Images Density Waves in Saturns Rings . ... Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA Explanation: What causes the patterns in Saturn's rings? The Cassini spacecraft just entering orbit around Saturn has started sending back spectacular images of Saturn's immense ring system in unprecedented detail . ... The cause for the beautifully geometric type of ring structure shown above in Saturn's A ring , however, is hypothesized to be a spiral density wave . ... Crescent Saturn . ...

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• Астронет > Cassini Images Density Waves in Saturns Rings
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• Астронет > Moons, Rings, and Unexpected Colors on Saturn

... 2004 July 5 . Cassini Images Density Waves in Saturn's Rings . Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA . Explanation: What causes the patterns in Saturn's rings? The Cassini spacecraft just entering orbit around Saturn has started sending back spectacular images of Saturn's immense ring system in unprecedented detail . ... The cause for the beautifully geometric type of ring structure shown above in Saturn's A ring , however, is hypothesized to be a spiral density wave . ...

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• APOD: 2008 October 20 - Moons, Rings, and Unexpected Colors on Saturn
• APOD: September 22, 1999 - Halos Around the Ring Nebula
• Saturn Picture List

... It would be the ultimate backpacking trip: an exploration of Saturn's rings. ... The partly hidden Sun glinting off the field of ring chunks, the gentle gravitational symphony of collective motion that carries both chunks and explorers safely around the planet, the feeling of being surrounded yet freely floating -- all disguise the fact that everything is whirling around Saturn at tens of thousands of kilometers per hour. ... Dark side of the ringed planet. ... The rings are enormous. ...

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• ASP: Science@Saturn: Cassini-Huygens Mission to Saturn and Titan
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... ATNF Home . ... About ATNF overview . News | ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Now, new Australia Telescope observations of the polar ring galaxy NGC 4650a suggest that the dark matter in this galaxy lies in a flattened distribution aligned with the polar ring. ...

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• Ring Galaxies

CCD Forum Message . Forums: . ... Discussion Forums | CCD Tips and Techniques | Post . ... Not A Shadow . ... Post Message | ... That's not a shadow of the rings on the globe. ... Sometimes, you can see the shadow of the globe on the rings, that's real cool! ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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... A dynamo is created in a magnetic field by an electric circuit, part of which is moving relative to the rest (additional conditions must also be met). ... Furthermore, the plasma between them conducts electricity very well along its magnetic field lines, which act as if they were wires connecting Io and the planet (drawing). ... The drawing is not to scale. ... The Hubble Space Telescope , using its Wide Field and Planetary Camera 2, has been photographing auroras of the planet Jupiter. ...

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• The Magnetosphere
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... HST view from 1990 788k tiff ; 12k jpg . edge-on rings (HST) 33k jpg ; 86k gif ( caption ) . nearly edge-on rings (HST) 36k jpg ; 86k gif ( caption ) . ... False-color view of Saturn 332k gif ; 61k jpg . ... Saturn (three color -red,green,blue- composite) by HST (670 km per pixel) 71k gif ; 39k jpg . ... Ring spokes (false color) 204k gif . ... Edge-on rings and four moons from HST (August 95) 24k jpg ; 108k gif ( caption ) . ... Spectacular false color image of the rings 130k jpg . ...

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... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Does Pluto have rings? ... A fter our team discovered Pluto's small moons, we realized impacts on them might generate ejecta that gets into orbit around Pluto, creating rings around the planet. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter...

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• An afternoon ring of fire | Astronomy.com
• Why do aurorae appear strongest within rings centered on Earth's poles instead
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HIND HORN The maid came tripping down the stairs, Rings on her fingers and gold in her hair, With a glass of wine all into her hands. ... I neither got it by sea or by land, Neither did I get it from a drowned man's hand; My ma-ma gave it to me on her courting day And I'll give it back on her wedding day." Rings from her fingers she did let fall, Gold from her hair she did tear off, Saying, "I'll go with thee forever, ever more, If I have to beg my bread from door to door." ...

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. True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . Images show regions used to extract spectra . Regions with red strikes are excluded . Background was subtracted from a region around or close to the SNR. Back to G337.2-00.7 Index . Chandra Supernova Remnant Catalog . Main Page | Galactic SNR | Magellanic Cloud SNR . True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR .

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• The AstroStat Slog Blog Archive There and back again

Southeast Ring of Ring of blue stars young stars plus dust FC1_A Stronger Coronal lines Outflow NLR_A FC2 E(B-V) = big i NLR_B FC1_B NLR E(B-V) = small FC2 E(B-V) = small FC1 Northwest Radio lobes (not to scale) Back scattering of FC1 & BLR 2 regions (A & B) with different E(B-V) Cone half-angle 46° < < 55° Inclination of cone axis 46° < i < 85° Inclination of stellar ring axis ~ 52° NLR scattering Forward scattering of FC1 & BLR E(B-V) = small Observer

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• http://www.eso.org/public/news/eso1308/kids/
• The dusty ring around the aging double star IRAS 08544-4431
• Planets shepherding material into a narrow ring around Fomalhaut

... 6-50, 8-00, 8-40, 9-20, 9-45, 10-05, 10-20, 10-25, 10-38, 11-00, 11-35, 11-50, 11-55, 12-25, 13-00, 13-30, 13-55, 14-15, 14-45, 15-25, 15-35, 16-00, 16-45, 17-15, 17-45, 18-50 . ... Ispravnaya: 6-10, 8-45, 12-00, 13-20, 16-45, 18-30 . ... Nalchik: 6-12, 8-00, 9-29, 11-15, 11-31, 11-50, 12-00, 12-38, 13-00, 13-15, 13-41, 14-50, 15-45, 16-08, 16-35, 17-00, 17-30, 18-30, 18-35, 18-52, 18-55, 19-35, 21-00, 23-00 . ... Vladikavkaz: 9-29, 12-00, 13-00, 14-50, 15-45, 17-30, 18-30, 23-00 . ...

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• Bus timetable from Zelenchukskaya and back
• Bus timetable from Zelenchukskaya and back, 2006
• Bus timetable from Zelenchuk and back

... Voyager Spacecraft Introduction (This Page) . ... The twin Voyager spacecraft, over the course of a dozen years, drew back the curtain on nearly half of the solar system . From launch in 1977 through the spectacular parting shots in 1989 of Neptune at the outer reaches of the solar system, this pair of gangly, instrument-laden spacecraft explored four planets -- Jupiter , Saturn , Uranus and Neptune -- as well as tens of moons, and the rings and magnetic environments of those planetary systems. ...

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The Sloan Digital Sky Survey plug-plate cartridge plugs into a socket on the back of the 2.5-m telescope. In that position, the images of galaxies and other targets fall upon the ends of optical fibers that are plugged into holes drilled in an aluminum plug-plate. ... A plug-plate is visible. ... The common corrector (blue) is located near the front surface of the primary mirror. ... In the left image, Ed Mannery (right) explains the purpose of the common corrector retaining ring to Don York. ...

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... Recent Results . ... last 10 years in ADS) . in SAO press releases . ... observations database) . ... Last update: . ... Measurement of the dark halo shape in polar ring galaxies . Determining the mass of supermassive black hole in galaxy Mrk6 nucleus based on spectropolarimetric observations . The dust jets in the nucleus of comet 29P/Schwassmann-Wachmann 1 . ... New Polar Ring Galaxies . Traces of recent interactions in isolated Seyfert galaxies . ...

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• Глава 6. Token Ring и IEEE 802.5
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The azimuth has an encoder on each side of the encoder rack gear. encoder 1 is on the dome side and is used for pointing the telescope. encoder 2 is on the ch side and is used to measure the bending of the azimuth arm. A reference scribe mark has been placed at 270 degrees on the ring girder. ... The correct position for the pointer on the reference mark is whereever it was when the last pointing model was made. ... az encoder error . ... new encoder in position (.jpg) .3 mm left of center mark . ...

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• Slide 4
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... (degrees) b2 galactic latitude (degrees) sgl supergalactic longitude (degrees) sgb supergalactic latitude (degrees) pgc PGC name *** alphabetical ** ident1 1st name (NGC,IC,UGC,ESO...) *** alphabetical ** pa position angle (N- E) in degrees typ morphological type (e.g. 'E','Sab','SBa','SO') *** alphabetical ** ring 'R' for Ring galaxies, otherwise ' ' (blank) *** alphabetical ** multiple 'M' for multiple galaxies, otherwise ' ' (blank) *** ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Solar System . ... Moon . ... Comets and Asteroids . ... What changed our view of Chariklo is the discovery of a ring system around it, the first such feature found around a Solar System body smaller than a gas giant planet. ... Almost certainly the rings were born when a collision with a smaller asteroid blasted millions of tonnes of debris off CharikloтАЩs surface. ... A ring system detected around the Centaur (10199) Chariklo (Braga-Rigas et al.) ...

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