... Dione's icy surface includes heavily cratered terrain, moderately cratered plains, lightly cratered plains, and whispy material. The heavily cratered terrain has numerous craters greater than 100 kilometers in diameter. ... Much of the heavily cratered terrain is located on the trailing hemisphere , with the less cratered plains area existing on the leading hemisphere . ... Because Dione is relatively small, an impact causing a 35 kilometer (21 mile) crater could have spun the satellite. ...

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• Titan Press Release
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Dione ( "dy OH nee" ) is the twelfth of Saturn 's known satellites: orbit : 377,400 km from Saturn diameter : 1120 km mass : 1.05e21 kg . ... Both rotate synchronously and have dissimilar leading and trailing hemispheres. ... Helene orbits in Dione's leading Lagrange point. more images . ... Helene is in Dione's leading Lagrange point and hence was sometimes referred to as "Dione B". from LANL . How did Helene come to be in Dione's Lagrange point? ... Saturn .. ... Dione / Helene .. ...

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• APOD: 2000 July 14 - Crater On Ice
• APOD: 2008 December 22 - Labtayt Sulci on Saturns Enceladus
• APOD: 2015 September 20 - Global Ocean Suspected on Saturn's Enceladus

... UA SCIENTIST & TEAM DISCOVER SURFACE FEATURES COVER TITAN (Science contacts: Peter H. Smith, (602) 621-2725; Mark Lemmon, (602) 621-1485; UA Lunar and Planetary Laboratory) . Scientists for the first time have made images of the surface of Saturn 's giant, haze-shrouded moon, Titan. ... About three weeks before Cassini's first flyby of Titan, the spacecraft is to release the European Space Agency's Huygens Probe to parachute to Titan's surface. ... Upper left: hemisphere facing Saturn. ...

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home education > activities . SEARCH ASP SITE: Match ALL words Match ANY word . ... Astronomy . ... This classic activity by Dennis Schatz asks students to invent a more-or-less plausible life form that could survive on one of the moons and planets in our solar system. [a] . ... Good as far as it goes, but fails to point out a crucial difference with the real world: on the planets, the impacting bodies explode making craters much bigger and rounder than the ones the students will obtain. [m,h] . ...

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• ASP: Sharing the Universe
• ASP: Astronomy in the News
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... F. Rodionova and E. A. Kozlova . ... Sternberg State Astronomical Institute, 119899, Moscow, Russia; jeanna@sai.msu ru. ... Brown University - Vernadsky Institute Microsymposium 34, October 8-9, 2001, Moscow, Russia . ... Brown University - Vernadsky Institute Microsymposium 38, October 27-29, 2003, Moscow, Russia . ... Brown University - Vernadsky Institute Microsymposium 40, 2004, Moscow, Russia . ... 1 Sternberg State Astronomical Institute Lomonosov Moscow University, Russia; marss8@mail.ru . ...

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• Родионова Жанна Федоровна
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Astronomy Picture of the Day . Mysterious Features on Ganymede . ... 9.12.1997 . ... Credit: The Galileo Project , NASA Explanation: Where is the rest of the circle? Jupiter 's largest moon Ganymede has some truly unusual terrain, including the pictured half circle above cut by nearly parallel curves. ... Also of interest is a dense linear crater chain that cuts across the top of the half-circle. ... 1997 1998 . ... Publications with keywords: Ganymede . Publications with words: Ganymede . ...

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• Астронет > Mysterious Features on Ganymede
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... 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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. ___________________________________________________________________ The Electronic Universe Project e-mail: nuts@moo.uoregon.edu

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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

Surface features from high-precision photometry Klaus G. Strassmeier , Leibniz-Institute for Astrophysics Potsdam (AIP) in collaboration with Igor Savanov, Thomas Granzer and John Rice 1. ... IAU GA2012, Special Session 13, August, 2012 Photometry from Antarctica (Dome C): July 2007 25cm telescope 243 hours continuous @ 98% K. G. Strassmeier, Surface features from high-precision photometry., ... IAU GA2012, Special Session 13, August, 2012 1. ...

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• http://www.stsci.edu/ftp/observing/status_reports/old_reports_94/hst_status_10_07_94
• Target Identification
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Planetology from the cm to the nm wavelength ranges: Arecibo Observatory, ALMA and IAA-CSIC R. Rodrigo1/L.M. Lara (IAA-CSIC) Granada (Spain) 1 Visiting Professor at Arecibo Observatory and at Universidad Metropolitana de Puerto Rico Luisa M. Lara Minor bodies and minor planets with ALMA ї Continuum ґ Asteroids Ї Map of the shape, large-scale surface features, and surface temperature distributions of the 700 largest objects in the main asteroid belt and the hundred largest Jupiter Trojans. ...

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... Hydrates MgSO MgSO MgSO MgSO MgSO MgSO MgSO 4 4 4 4 4 4 4 Sodium Sulfate Hydrates Na2SO4 Ї 10H2O Na2Mg(SO4)2 Ї 4H2O Mirabilite Bloedite Ї Ї Ї Ї Ї Ї Ї 1H2O 2H2O 4H2O 5H2O 6H2O 7H2O 11H2O Kieserite Sanderite Starkeyite Pentahydrite Hexahydrite Epsomite Undecahydrite ... 8H2O MgSO4 + H2O(l) Sodium Sulfide Nonahydrate Sulfuric Acid Hydrate Magnesium Sulfate Brine Galileo NIMS spectroscopy of Europan surface units 0.8 0.7 0.6 Scaled ... 2005 Wavelength (microns) The Search for Life on Europa.. ...

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• http://www.iki.rssi.ru/conf/2009elw/presentations/presentations_pdf/session5/Patterson_ELW.pdf
• Radiation Belts
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The following activities are included in the Universe at Your Fingertips guide. ... Clicking on each activity will take you to a "reviews" page where you can post a review, or read reviews posted by others who have used the activity. ... Activity Online . ... MOON AND PHASES . ... Observing Phases and Features . ... Modeling Moon Phases . ... SUN AND SEASONS . ... Observing the Sun Safely . ... Observing Where the Sun Sets . ... Making Pictures of Motion . ... Morning Star and Evening Star . ...

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• Features of the PROS software
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... News . ... Tune into the Asteroid Day press conference . ... Dawn sees new surface features on giant asteroid . ... In this image from NASA's Dawn spacecraft, bright material extends out from the crater Canuleia on Vesta. ... NASA's Dawn spacecraft has revealed unexpected details on the surface of the giant asteroid Vesta. New images and data highlight the diversity of Vesta's surface and reveal unusual geologic features, some of which were never previously seen on asteroids. ... LATEST NEWS . ...

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... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... ESO Acronyms . ... Survey Telescopes . ... Star Clusters . ... Feature Movies . ... Stars@ESO . ... ESO Science Newsletter . ... VLT Unit Telescopes Names . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... ESO 1-metre Schmidt telescope . ... Identification of the low-reflection areas now seen on the surface of Titan and which were given provisional names. ...

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• Provisional Names of Titan Surface Features | ESO Australia
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... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... the star might be able to see the lead- and zirconium-rich . ... Naslim Neelamkodan, Simon Jeffery, Natalie Behara and Alan Hibbert are studying the surfaces of small hot stars, known as helium-rich subdwarfs. ... Now studying a group of similar stars, they have discovered two which have surfaces containing ten thousand (10,000) times more lead than is present on the surface of the Sun. ... Prof Simon Jeffery . ...

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• Featured Image | International Year of Astronomy in Ireland | Astronomy 2009
• Chromospheric Modelling
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Apollo 15 . ... 1971) --- An excellent view of Mount Hadley, fully lighted, showing abundant linear features, as photographed during the Apollo 15 lunar surface extravehicular activity (EVA). ... While astronauts David R. Scott, commander, and James B. Irwin, lunar module pilot, descended in the Apollo 15 Lunar Module (LM) "Falcon" to explore the Hadley-Apennine area of the moon, astronaut Alfred M. Worden, command module pilot, remained with the Command and Service Module (CSM) in lunar orbit. ...

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• Astronaut Bio: Peter J. K. Wisoff 11/2001
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... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... Brief History of Rocket and Space Technology . ... Martian Mission . ... ISS Russian Segment . ... Then, using propulsion units, this vehicle is injected into the interplanetary trajectory, and over the next few months the vehicle transits to Mars. ... Key data on the interplanetary vehicle of the RSC Energia concept . ... Contribution of RSC Energia to the Russian Rocket-Space Technology . ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Moon . ... Now these moons are actually quite small with UranusтАЩs largest moon Titania having half the diameter of our own moon! ... The rest of the moons of Uranus are a lot smaller with many astronomers believing that they are actually captured asteroids and in comparison to some of the other systems of satellites orbiting around the other planets even UranusтАЩs major moons arenтАЩt exactly big but they still have their peculiarities. ...

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• New Horizons at Pluto | Astronotes
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... Visible Distribution of Galaxies. ... Features of Elliptical, Lens-Shaped, Spiral and Irregular Galaxies. Galaxies with Bar. ... Distribution of Surface Brightness of Surface and Spiral Galaxies. ... Color Characteristics of Galaxies. ... Methods of Galaxies' Mass Determination. ... Hidden Mass of Spiral Galaxies. ... Features of Dark Matter Distribution in E and SO Galaxies. ... The Whole Number of Galaxies and Their Density by the Results of Observation on the 'Hubble' Space Telescope. ...

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• Solar Physics
• General Astrophysics
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