... APOD: 2007 August 1- Unusual Cratering on Saturns Dione . ... Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA Explanation: Why does one half of Dione have more craters than the other? Start with the fact that Saturn 's moon Dione always has one side that faces Saturn, and always has one side that faces away. ... August 2007 . ... Publications with keywords: Saturn - Dione - crater . Publications with words: Saturn - Dione - crater . ... Saturn s Infrared Glow . ... Crescent Saturn . ...

... 2007 August 1 . Unusual Cratering on Saturn's Dione . Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA . Explanation: Why does one half of Dione have more craters than the other? Start with the fact that Saturn 's moon Dione always has one side that faces Saturn, and always has one side that faces away. ... But the current leading half of Dione is less cratered than the trailing half! ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

... Circumstellar disc of beta Pictoris: constraints on grain properties from polarization. To appear in the Astronomy & Astrophysics . abs , src , ps ] . ... Dust influx to Titan from Hyperion . ... abs ] . ... Characteristics of bulges and disks in interacting galaxies . ... Dust grains around Herbig Ae/Be stars: porous, cometary-like grains? ... To appear in the Astronomy & Astrophysics Supplement . ... Finally, Links may lead you to more options (e.g. via the LANL preprint system). ...

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

... About meteorites . ... Meteoritic data . Impact Crater Smerdyachee . ... Based on Smerdyachee's depth, near circularity, and its mounded wall, and analysis by N.A. Fillin of nearby Roshal, Russia, the Estonian scientists Yu.V. Krestlane and K.H. Mella proposed in 1987 that Smerdyachee Lake is a meteorite crater. ... In 2002, the Laboratory of Meteoritics of the Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences explored this mysterious lake. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. August 17, 1999 . A Crescent Sunrise . ... Explanation: Normally, the Moon shows phases, but the Sun does not. ... When the Moon is closer to the Sun than the Earth, only part of it appears to be lit - resulting in a familiar crescent-shaped phase . ... Nothing was wrong with Sun - viewers were witnessing the end of a solar eclipse . ...

... GSAOI Home . ... Picture Gallery . ... NIFS Cryostat and integration frame, as GSAOI will appear . NIFS cryostat, as GSAOI will appear . Cryostat in integration frame . Optical layout . ... Mechanical layout . ... Input beam splitter . ... Instrument integration ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . Books . ASP Conference Series . Monograph Publications . IAU Publications . Books of Note . ... Publications of the ASP (PASP) . ... Mercury Magazine . ... Order Mercury Issues . Mercury Advertising Rates . ... ASP E-mail Newsletters . ... Astronomy Beat . ... Mercury Magazine Contents . ... July/August 2001 . ... Surveying Our Home Galaxy . ... Annals of Astronomy, Clifford J. Cunningham . ...

... LP-Moon.pdf - 26KB . ... A. A. Berezhnoy1,2, N. Hasebe1, M. Kobayashi1, G. Michael3 and N. Yamashita1 1Advanced Research Institute for Science and Engineering, Waseda University, Tokyo, Japan 2Sternberg Astronomical Institute, Moscow, Russia 3German Aerospace Center, Institute for planetary research, Berlin, Germany . Brown University - Vernadsky Institute Microsymposium 40, 2004, Moscow, Russia . ... 3Now at: Sternberg Astronomical Institute, Moscow University, Moscow, Russia . ...

. Home . Documentation . Watchouts . Help . Calibration . Installation . Software requirements . Download . Notice that SOC-only packages like deceit, newsiam, odfcheck, etc , may appear listed in the list of all packages but no documentation is available for any of them. SAS User's Guide . HTML . PDF . PS . HEASARC ABC Guide (not up to date) . HTML . PDF . ps.gz . Pages maintained by SAS librarian . Any question about SAS should be addressed to the XMM-Newton help desk . Updated on: August 31, 2007

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Facilities . ATNF facilities . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... ATCA . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

... 2) get instructions for proceedings from here . ... Chris Sterken (chair), Ulli K ufl (co-chair), Mike A'Hearn, Hermann Boehnhardt, Michael Combi, Yan Fernandez, Marco Fulle, Luisa Lara, Casey Lisse, Jean Manfroid, Karen Meech, Javier Licandro, Heike Rauer, Rita Schulz, Gerhardt Schwehm, Diane Wooden . ... Ulli K ufl or Chris Sterken . ... there will be proceedings in the ESO / SPRINGER series (eds. Ulli K ufl & Chris Sterken); link to retrieve latex-kit . ... Deep Impact Specific Questions . ...

Title: A Dark-Matter Spike at the Galactic Center? Authors: Piero Ullio , HongSheng Zhao , Marc Kamionkowski . ... Title: The Galaxy Environment of Quasars in the Clowes-Campusano Large Quasar Group at z~1.3 . ... Title: The Galaxy Environment of a Quasar at z=1.226: A Possible Cluster Merger . ... 16 matches for the search pattern galaxy environment . The URL for this page is: http://xxx.itep.ru/find/astro-ph/1/galaxy+environment/0/1/0/past,all/0/0 www-admin@xxx.lanl.gov ...

... Jitter is usually very small in magnitude and random in effect, and is not expected to lead to systematic throughput changes. ... However, such a change should lead to an obvious decline in the strength of the comparison lines at one end of the spectrum relative to the other and not an overall decline in counts. No such effect is seen (the counts decline evenly from one end of the spectrum to the other). ... The value changes steadily, but not by enough to account for the changes in counts seen. ...

... Laboratory for Spectroscopy of Molecular Structures . ... News . ... A new article entitled Description of optical properties of cholesteric photonic liquid crystals based on Maxwell equations and Kramers-Kronig relations has appeared in Physical Review E. Congratulations to Grigoriy Ksyonz on his first publication! . 25 th February 2013 . ... 22 nd November 2012 . ... 22 nd February 2012 . 4 th Workshop on Liquid Crystals for Photonics 2012 will take place in Hong Kong December 9-11, 2012. ...

... Comments, Opinions Publications Dnepr Program . ... During 1992-2003 timeframe, a team of Russian and Ukrainian companies together with the Russian Ministry of Defense (MoD) were involved in developing a commercial space launch system based on the technology of the SS-18 ICBMs being withdrawn from service. ... ISC Kosmotras was assigned the role of a team leader to build and commercially operate this SS-18 ICBM based space launch system and the entire program was given the name Dnepr . ... Dnepr LV ...

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 . ...

Astronotes Armagh Planetarium's Stellar Blog! ... This image combines orbital imagery with 3-D modelling to show flows that appear in spring and summer on a slope inside Mars' Newton crater. ... Warm season flows on a slope in Newton Crater, possible evidence of salty liquid water active on Mars today. Image credit: NASA) . ... Frozen water is common on and under the surface of Mars but these images are the best evidence to date for the presence of liquid water on the Martian surface today. ...

... Read Mark BosloughУ?т??т??s blog on the Jupiter impact . ... Odd martian crater type caused by impacts into ancient ice . ... Double-layered ejecta craters (DLEs), like other craters, are surrounded by debris excavated by an impactor. ... An understanding of how these and other crater types formed could help researchers reconstruct the environmental conditions at the time of the impacts. ... For example, unlike other crater types, DLEs tend not to have secondary craters surrounding them. ...