... Neptune is smaller in diameter but larger in mass than Uranus . ... N eptune has been visited by only one spacecraft, Voyager 2 on Aug 25 1989. ... A t the time of the Voyager encounter, Neptune's most prominent feature was the Great Dark Spot (left) in the southern hemisphere. ... Neptune's winds blew the Great Dark Spot westward at 300 meters/second (700 mph). ... L ike Uranus and Jupiter, Neptune's rings are very dark but their composition is unknown. ... Neptune's Ring System . ... Uranus .. ...

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• Jupiter's Moon Amalthea
• Comet Shoemaker-Levy 9
• Galileo to Jupiter

... Neptune is smaller in diameter but larger in mass than Uranus . ... An international dispute arose between the English and French (though not, apparently between Adams and Le Verrier personally) over priority and the right to name the new planet; they are now jointly credited with Neptune's discovery. ... A t the time of the Voyager encounter, Neptune's most prominent feature was the Great Dark Spot (left) in the southern hemisphere. ... more Neptune images . ... What happened to the Great Dark Spot...

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• The Discovery of the Galilean Satellites
• Jupiter's Moon Amalthea
• Comet Shoemaker-Levy 9

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... Publications of the ASP (PASP) . ... A Minor Planet's Night Out . ... Orbiting between Mars and Jupiter are thousands of rocky bodies. ... In 1804 came Juno; in 1807, Vesta. ... Most minor planets, as asteroids are sometimes affectionately called, hum in elliptical orbits between Mars and Jupiter. ... This helps us as we select the Guest Observer, and it helps readers to understand what you studied. ...

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• ASP: The Comet About to Smash into Jupiter
• ASP: The Music of the New Spheres?

NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Astronomy . ... Visitor Center . ... Comets . ... Observing conditions were favorable at Arecibo July 5-15 2001, and observing time for both spectroscopy of 18-cm OH lines and S-band radar observations were arranged. The comet nucleus was observed to split into two pieces on April 30. ... Because the comet passed within 0.25 AU of the Earth in early July, when it was visible from Arecibo Observatory, it was fairly well suited to radar observation. ...

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• Asteroid 1998 ML14 1998 Aug 14-17
• Radar Images of asteroid 1998 ML14
• Arecibo Radar Discovers Triple Near-Earth Asteroid

... Surveyor 6 was not the first spacecraft to accomplish a soft landing on the Moon ... but it was the first to land and then lift off again! ... An inner moon, an edge-on, planet-girdling ring, and high altitude cloud bands are visible in this mosaic of infrared images of gas giant Jupiter. The moon Metis, 25 miles wide and about 80,000 miles from the planet, is the bright spot at the upper right. ... First, a telescope brings starlight falling over a large area to a small area. ...

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... Tonight's Sky . ... Red skies discovered on extreme brown dwarf . ... A team of astronomers from the University of Hertfordshire s Center for Astrophysics Research has discovered a peculiar example of a celestial body, known as a brown dwarf, with unusually red skies. ... A red sky on the brown dwarf suggests an atmosphere loaded with dust and moisture particles. ... However, the recently discovered brown dwarf ULAS J222711-004547 has a very different atmosphere where the sky is always red. ...

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• Astronomers recently discovered that Scholz's star passed close to the Sun
• Astronomers recently discovered brown dwarfs of only a few hundred degrees
• Huge tornadoes discovered on the Sun | Astronomy.com

... 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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• Research - Compact high-velocity clouds around the Milky Way
• Molecular gas
• The Optical Counterparts to Galaxies in the Cen A Group Discovered by HIPASS

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... A numerical simulation of the Oort cloud is used to explain the observed orbital distributions and numbers of Jupiter-family and Halley-type short-period comets. ... Virtually all observed Halley-type comets and nearly half of observed Jupiter-family comets come from the Oort cloud, and initially (4.5 Gyr ago) from orbits concentrated near the outer planetary region. ...

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• Observing Jupiter | International Year of Astronomy in Ireland | Astronomy 2009
• First Observation of a Close Earth-Approaching Near-Earth Asteroid Using the
• Grubb 10 inch Refractor

... I had also observed that comet in 1994, as it passed the halfway mark (January 1994): observation of the faintest solar system object ever observed. [at that time]. ... We observed it at the 2.2m at ESO in Mar.2001; here is a nice color image (and is also available in Italian , in Hebrew elsewhere.. ... The IfA Hale-Bopp page contains plenty of info and links about that comet; for nice pictures, check out the Images and Spectra page . ... Olivier R. Hainaut (ohainaut at eso.org) . ...

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• ESO - La Silla Science Operations
• ESO - Observing conditions: definitions
• VLTI Calibrator Selection Help Page

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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• smalltelae
• antichnoste
• shum-levie

... The related observations clearly evidence both global motions and turbulence in the upper Jovian atmosphere. Keywords: solar system, giant planets, atmospheres, Jupiter . To explain both an upper atmospheric thermal excess observed in the Jupiter atmosphere by the Voyager missions and a permanent enhancement of the H Ly- brightness observed near the equator (Clarke et al. ... These Doppler shifts appear as being the signature of global H motions in the upper atmosphere of Jupiter. ...

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• Observing Windows [Windows]
• HST Observer Monthly
• HST this week: 047

Europa ("yoo ROH puh") is the sixth of Jupiter 's known satellites and the fourth largest; it is the second of the Galilean moons. ... Discovered by Galileo and Marius in 1610. ... But Europa's surface is not at all like anything in the inner solar system. ... The images of Europa's surface strongly resemble images of sea ice on Earth. It is possible that beneath Europa's surface ice there is a layer of liquid water , perhaps as much as 50 km deep, kept liquid by tidally generated heat. ...

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• APOD: 2011 December 6 - Jupiter Rotation Movie from Pic du Midi
• Kuiper-Oort
• APOD: 2003 March 19 - Jupiter's Great Dark Spot

Supernova 2009js in NGC 918 . This page is devoted to information on Supernova 2009js in NGC 918 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. Discovered independently by Lick Observatory Supernova Search (USA) and Koichi Itagaki (Japan). ... 2009/10/11.44 . 17.2 . ... Joseph Brimacombe . ...

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• SN1989B in M66
• Supernova 1993J in M81
• Supernova 2006sr in UGC 14

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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• Neptune: discovered one year ago | Astronotes
• Comet Lovejoy is on the Way | Astronotes
• Exploring Icy Moons in Search of Life | Astronotes

... The planets differ greatly in size and properties, and their fields differ too. ... In 1959, after the Earth's radiation belt had been discovered, Frank Drake observed Jupiter and concluded from the relative intensities in a range of wavelengths that the signal was probably emitted by electrons trapped in a strong magnetic field. Then in 1973 the space probe Pioneer 10 passed by Jupiter and found there, sure enough, an enormous planetary magnetic field and a very intense radiation belt. ...

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• The Io Dynamo
• Chronology of Magnetospheric Exploration
• The Sun

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

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• Astronomy Plus CCD Images of Galaxies
• Astro-2 and the UIT Experiment
• Cosmological Issues for Theorists

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Slacker Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Life Under the Moon . ... Seeing Jupiter's Moons . ... Time Zones and the Spherical Earth . A Companion to the Earth? ... December 19, 1999) . ... Big Moon, Little Moon . ... How Big is the Moon? ... 14, 2000) . ... 2008 Phil Plait. ... Subscribe to the Bad Astronomy Newsletter! Talk about Bad Astronomy on the BA Bulletin Board! ...

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• Phil Plait's Bad Astronomy: Bitesize Tour of the Solar System
• Phil Plait's Bad Astronomy: Misconceptions

... 1997: . The character of internal motions of gas in 7200 HI clouds in the outer region of our Galaxy was investigated according to the data of the HI survey with the RATAN-600. It turned out that the effect of turbulence, as the main mechanism of gas motion is not essential, while it was discovered that 36% of the clouds are rotating. ... Periodic variations of optical emission of the gamma, X-ray and radio pulsar GEMINGA were for the first time discovered from the observations with the BTA. ...

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• C/2010 S1 (LINEAR), C/2010 R1 (LINEAR)
• Detection of unique bright radio flare of X-ray binary
• Metagalaxy sector, archive 2006

MAIN PAGE . ... Nova Cygni August 1975! ... 1975/76: Comet West! ... Dr. Richard West (4th from left) & AAL members visiting SES Betzdorf on occasion of our club's 25th anniversary - October 1996 . Comet West Information . ... It was the brightest comet visible from Earth since Comet West in 1976. ... 1997: Comet Hale-Bopp! ... Thus Comet Hale-Bopp never got closer to Earth than Earth gets to the Sun. ... Comet Hale-Bopp JPL Page . ... 1999: Total solar eclipse over Luxembourg! ...

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True Color Image Gallery: Galactic SNR | ... Distance: 8kpc(distance =2-9 kpc Rakowski et al.( 2007) ) . ... Radio Images Page: not availabe . ... Exposure uf . ... Exposure uf Exposure time of unfiltered event file . Exposure f Exposure time of filtered event file . ... Event 2 FITS File . ... AUX file . ... N H = 6.1(10 22 cm -2 ) Assumed distance: 8kpc (distance =2-9 kpc Rakowski et al.(2007) ) . see fit detail page for more about the fit. see chandra spectrum page for region used. ...

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• The Diffuse X-Ray Background
• Chandra Images for G018.4-00.4
• Chandra Images for G350.1-00.3