... Impact craters and associated concentric rings are about the only features to be found on Callisto. ... It has a bright central region that is 600 kilometers in diameter, and its rings extend to 3000 kilometers in diameter. ... This image shows the heavily cratered surface of Callisto. ... Also visible is a fresh, sharp-rimmed crater some 90 km (56 miles) across named Igaluk (center left third of picture), and a bright zone in the south polar area (bottom of image) which could be an impact scar. ...

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• Jupiter's Moon Ganymede

... Impact craters and associated concentric rings are about the only features to be found on Callisto. ... It has a bright central region that is 600 kilometers in diameter, and its rings extend to 3000 kilometers in diameter. ... This image shows the heavily cratered surface of Callisto. ... Also visible is a fresh, sharp-rimmed crater some 90 km (56 miles) across named Igaluk (center left third of picture), and a bright zone in the south polar area (bottom of image) which could be an impact scar. ...

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• Jupiter's Moon Europa
• Jupiter's Moon Ganymede
• Jupiter's Europa Harbors Possible "Warm Ice" or Liquid Water

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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• National Astronomy and Ionosphere Center (Arecibo Observatory)
• Asteroids National Astronomy and Ionosphere Center (Arecibo Observatory)
• Venus National Astronomy and Ionosphere Center (Arecibo Observatory)

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• Astronaut Bio: Peter J. K. Wisoff 11/2001

5 Million Miles From Io . ... Credit Copyright: Voyager Project , JPL , NASA Explanation: Twenty years ago this month, NASA's Voyager 1 spacecraft flew past Jupiter and its moons. ... Now known to be volcanic in origin , these features were then thought likely to be impact craters, commonly seen on rocky bodies throughout the Solar System . But as Voyager continued to approach Io, close-up pictures revealed a bizarre world devoid of impact craters, frequently resurfaced by volcanic activity. ...

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• XWare > APOD

The following images of the icy surface of Ganymede, the Solar System's largest moon, were made by the Galileo spacecraft during its ongoing mission to explore Jupiter and the Jovian system. ... This image was taken when Galileo was 7,448 kilometers (4,628 miles) away from Ganymede; north is to the top of the picture, and sunlight illuminates the surface from the lower left nearly overhead (77 degrees above the horizon). ... The image was taken June 27 at a range of 7,448 kilometers (4,628 miles). ...

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• APOD: 2009 November 11 - Great Observatories Explore Galactic Center
• APOD: 2002 April 13 - Pwyll: Icy Crater of Europa
• APOD: 2000 July 14 - Crater On Ice

... Tonight's Sky . ... Sky this Month . ... The Sky This Week: April 1 - 10 . ... Sky this Week . ... Astronomy for Kids . ... Sky Events . Get to Know the Night Sky . Tour the Deep Sky . Sky Guide . ... Observing springtime deep-sky objects with a large telescope . ... Astronomy 101 . ... Astronomy Day . ... Gift Center . ... NASA's Ames Research Center in Moffett Field, California . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

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• Marshall Space Flight Center, Huntsville, Alabama | Astronomy.com
• Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts |
• International Center for Radio Astronomy Research, Perth, Western Australia |

... 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: The Comet About to Smash into Jupiter
• ASP: Resource Center
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... НЕПРЕРЫВНОГО МАТЕМАТИЧЕСКОГО ОБРАЗОВАНИЯ . ... Кружок ?Олимпиады и математика? ... Московская математическая олимпиада . Заочный математический конкурс . ... Устные математические олимпиады . Олимпиады по программированию . Математический праздник . Математические регаты . ... Математические бои . Олимпиада по геометрии им. И.Ф.Шарыгина . ... Программа ?Math in Moscow? Научные конкурсы . Творческий конкурс . ... График олимпиад . ... XXVII Математический праздник . ...

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• Math in Moscow
• Introduction
• Moscow Center for Continuous Mathematical Education - Independent University of

... Институт прикладной математики им. М.В.Келдыша . БАЛЛИСТИЧЕСКИЙ ЦЕНТР . О Центре . ... Баллистический Центр Института прикладной математики им. М.В.Келдыша РАН . Баллистический центр (БЦ) ИПМ им. М.В. Келдыша создан по предложению С.П. Королева и М.В. Келдыша в 1965 году. На него были возложены работы по баллистико-навигационному обеспечению (БНО) управления полетом пилотируемых кораблей и автоматических космических аппаратов научного и народно-хозяйственного назначения. ...

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... Home Observing Lincoln Center . ... AAA Fall Astronomy Class: Astronomy Basics тАУ October-November 2015 . ... This MonthтАЩs Sky тАУ April 2015 . This MonthтАЩs Sky тАУ May 2015 . This MonthтАЩs Sky тАУ June 2015 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

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• lincoln center ? Amateur Astronomers Association of New York
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... 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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• Target Description [Description]
• Quasar Spectral Features at Intermediate Redshift
• CSPICE Routines: EDLIMB_C

... Ж.Ф. Родионова, А.А.Карлов, Т.П. Скобелева и др. ... Sternberg State Astronomical Institute, 119899, Moscow, Russia; jeanna@sai.msu ru. ... Moscow State University, Vorobjovy Gory, 119899, Moscow, Russia. Brown University - Vernadsky Institute Microsymposium 34, October 8-9, 2001, Moscow, Russia . ... Rodionova J1., ... Sternberg State Astronomical Institute, Moscow University, jeanna@sai.msu.ru . ... 1 Sternberg State Astronomical Institute Lomonosov Moscow University, Russia; marss8@mail.ru . ...

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• Zhanna F. Rodionova
• Morphological Catalogue Of The Craters Of Mars
• Майкл Грегори Гордон

Электронная библиотека астронома-любителя. ... архив RSN . ... Апрель 1998 . ... Дата: 10 апреля 1998 (1998-04-10) От: Alexander Bondugin Тема: Galileo Update - April 9, 1998 Привет всем! ... Дата: 10 апреля 1998 (1998-04-10) От: Alexander Bondugin Тема: Mars Global Surveyor Update - April 9, 1998 Привет всем! ... The feature known as the "Face on Mars" in the Cydonia region was imaged quite successfully on April 5th and its image was released in raw form and in an enhanced form on April 6th. ...

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• Электронная библиотека астронома-любителя. RU.SPACE.NEWS - архив за 21 июля
• Электронная библиотека астронома-любителя. RU.SPACE.NEWS - архив за 15 июля
• Электронная библиотека астронома-любителя. RU.SPACE.NEWS - архив за 16 марта

... Solar System . ... Comets and Asteroids . ... Vision of Vesta: a dark feature with a diameter of approximately 100 kim near the asteroid's equator can be seen in this image from Dawn (Image credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA) . Between Mars and Jupiter lies the Asteroid Belt. ... The Dawn space probe is expected to go into orbit around Vesta on 16 July, from there it will return some detailed images and other data, staying at the asteroid for about a year before setting off to visit Ceres. ...

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• Exploring Icy Moons in Search of Life | Astronotes
• Astronauts Boarding Orion Spacecraft | Astronotes
• New Horizons at Pluto | Astronotes

Go directly to the moons of: . Mercury Venus Mars Jupiter Saturn Uranus Neptune Pluto . MARS . Pronunciation . Earth's Moon . ... Aeolis . ... Aestuum . ... Aeria . ... A-muh-ZAHN-is . ...

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• Planets and Moons

... CfA Home . HCO Home . SAO Home . ... Welcome to CfA . CfA History . ... Laboratory Astrophysics . Extreme Astrophysics . ... 617) 495-7210 . ... 617) 495-7044 . ... 617) 495-7265 . ... HEA Research . ... HEA Home Page . CFA/HEA Home Page . ... High Energy Astrophysics Division (HEAD) . Chandra X-ray Center . ... Chandra Cluster Cosmology Project . Chandra Multiwavelength Project (ChaMP) . ... Chandra-Planck Clusters Project . ... CfA Virtual Observatory Project . ...

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• Martin Elvis - Home Page
• Chandra Images for SNR J0047.5-7307
• Chandra Images for SNR J0046.6-7307

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . The Charles E. Daniel Observatory features a very historic 23" refractor telescope, the eighth largest of its kind in the nation. ... Last Update October 26, 2004 . Listed Since October 26, 2004 . ... 402 Roper Mountain Road . ... Web Site . http://www.ropermountain.org/Observatory/observatory.shtml . ... Web . ... dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• Infrared Processing and Analysis Center, The - IPAC, AstroGuide Listing
• Kopernik Space Education Center, AstroGuide Listing
• Khan Scope Center, AstroGuide Listing

SINGULAR POINTS IN THE SOLAR CHROMOSPHERE . ... In the structure of the solar chromosphere, containing information on the configuration of the magnetic field, we have found and identified all the main types of the singular points ( see Fig. 1 ), which are known as inherent features of the 2-D vector field. ... The main types of the singular points are the node, the focus, the center, and the saddle. ... Singular point of the focus type in the solar chromosphere. ...

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• nssdcftp