Astronomy Picture of the Day . ... Abell 2142: Clash of the Galaxy Clusters . ... Above is an X-ray image of Abell 2142, the result of the collision of two huge clusters of galaxies, and one of the most massive objects known in the universe. The Pipe Dark Nebula . ... The dark clouds, suggestively shaped like smoke rising from a pipe, are caused by absorption of background starlight by dust. ... NGC 1999: Reflection Nebula In Orion . ... Even as leap days go, today is a remarkable one. ...

SAI 175 anniversary . ... Moscow University . Search for in SAI Moscow University Search for in Russian astronomical resources . ... SAI Astronomical Databases . ... Browse SAI Software archive(ftp.sai.msu.su) . ASTRONET.RU - Russian Astronomical Network (available in translit also) . ... SAI Supernovae Research Group . ... Department of the Galaxy and Variable Stars (in Russian) . Sternberg Astronomical Institute Seminars . ... All-Russian Astronomical Olympiad (in Russian) . ...

... Jupiter. ... The time in the table is the mean solar time for the Almaty time zone. ... Almaty and Cholpon-Ata are in the same time zone. h 25 h 36 h 00 h 12 h 24 h 36 h 48 h 12 h 48 m (February 28) m m m m m m m m (March 1) m m m m m m m m m m m m m m m m m m m m 14.92 15.08 15.41 15.44 15.37 15.12 14.92 14.89 14.80 14.78 14.80 14.82 14.85 14.96 14.72 14.72 14.63 14.65 14.77 14.84 15.10 15.43 15.32 15.05 14.90 14.75 14.73 14.70 Bishkek ­ Cholpon-Ata , Kyrgyzstan ...

... Donate to Support Science Literacy . ... 2016 Annual Awards . The ASP is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach. ... Shop the AstroShop . ... The Astronomical Society of the Pacific (ASP) is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach.. ...

Most of these images were obtained by Mike Bessell, Michelle Buxton, Hwankyung Sung, Ralph Sutherland and Bob Watson at SSO using a 2Kx2K Site CCD behind a Nikon or Hasselblad lens or directly on the 1m telescope. A few images are from the Hubble Space Telescope. Some of the M42 images were obtained with the KPNO 1m and ESO NTT telescope. One image is a mosaic of IRAS images. ... Details of the CCD imaging program at MSSSO. ... antenna.jpg (53KB) . ... ngc6744.jpg (59KB) . ...

Microsymposium 38, MS083, 2003 (A4 format) MERCURY: LOCAL VARIATIONS OF THE PHOTOMETRIC RELIEF. ... Because of trajectory and pointing angle constraints the planet could be observed from Mariner 10 only over a small range of phase angles between about 75o and 110o. Therefore the photometric investigations are restricted to measuring the distribution of brightness on the Mercurian disk. ... Raw versions of real-time processing pictures FDS 0000984 and FDS 0000986 were used (images 196 and 202). ...

... Field of research: Extragalactic astronomy. ... NASA Astrophysics Data System (ADS) Abstract Service . ... CADC Home Page . ... CCD Images of Galaxies . ... RUSSIAN LINKS . ... UA Astronomy Personal Home Page - Bill Keel . ... The Shape of the Rotation Curves of Edge-on Galaxies, by A.V.Zasov and A.V.Khoperskov, 2003. ... A Thickness of Stellar Discs, by A.V.Zasov, and D.V.Bizyaev, 2003 . Minimum Velocity Dispersion in Stable Stellar Disks, by A.V.Khoperskov, A.V.Zasov, and N.V.Tyurina, 2003 . ...

... Science User Portal . ... ESO, the European Southern Observatory . ... ESO's Governing Bodies . ... Travel and Contacts . Travel to ESO Headquarters . ... Travel to E-ELT Armazones . ... Survey Telescopes . ... Star Clusters . ... Stars@ESO . ... ESO Science Newsletter . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... ESO 1-metre Schmidt telescope . ... Wide view centred on the CatтАЩs Paw Nebula (NGC 6334). ... Cat's Paw Nebula , Digitized Sky Survey 2 (DSS 2) , NGC 6334 . ...

... Astronomers once thought Pluto's atmosphere would condense down to the surface as it moved away from the Sun. Can that still be true, and if so, is that causing the surface features we now see? ... This is almost certainly because the atmosphere which is nitrogen, like Earth s atmosphere is also frozen as ice on the surface. ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ...

T he solar system consists of the Sun ; the nine planets, sixty four (64) satellites of the planets, a large number of small bodies (the comets and asteroids), and the interplanetary medium. The inner solar system contains the Sun, Mercury , Venus , Earth and Mars : . T he planets of the outer solar system are Jupiter , Saturn , Uranus , Neptune and Pluto : . ... small planets: Mercury, Venus, Earth, Mars and Pluto. ... inferior planets: Mercury and Venus. closer to the Sun than Earth. ...

Understanding Europa's Radiation Environment and How it Influences Landing Site Characterization G.W. Patterson, L.M. Prockter, C. Paranicas Applied Physics Laboratory Introduction · The surface of Europa is weathered by charged and neutral particles, micrometeroids, and photons. ... Background · Criteria for characterizing potential landing sites [e.g., Figueredo et al., ... 2004) Background · Criteria for characterizing potential landing sites [e.g., Figueredo et al., ... Figueredo et al., ...

... 2010 . ... The following images are mosaics obtained on 03 August 2010 at the National Solar Observatory/Dunn Solar Telescope with the Interferometric Bidimensional Spectrometer (IBIS). ... The final images are approximately 238 x 242 arcseconds, or 4 x 4 arcminutes, with a pixel scale of 0.0976 arcseconds per pixel. ... The images show a broad range of typical chromospheric structures, including sunspots, superpenumbra, plage, filaments, and quiet internetwork. ...

... Other links: | ... AAO MSSSO ATNF Gemini Aust. ... ASA Astronomy meetings worldwide. Old meetings that have useful webpages of talks: . ... NED NED search-by-name SIMBAD Astronomer's Bazaar Aladin CATS MAST Skyview Virtual Observatory SDSS DR6 SuperCOSMOS Sky Surveys Interactive NGC Catalog . SSO Satellite Weather APT All Sky Camera SSO CONCAM All Sky Camera Heavens-Above AGN Finding Charts (Heidelberg) PEGA Finding Charts Perugia Blazar List Sunrise & Sunset computing Sky View Cafe . ...

... Final astrometric results. ... 2009MNRAS_394_1037E Informations. relative to: reference body is an occulted or eclipsed satellite . reference frame: astrometric centre of frame: topocenter for mutual occultation or heliocenter for mutual eclipse epoch of equinox: J2000 time scale: UTC reduction: from mutual occultations and eclipses coordinates: Position angle (topocentric for mutual occultation or heliocentric for mutual ... Hour of the astrometric data (UTC) 7. ...

... Astrometry with the FGS, by contrast, proceeds in the reverse order; the positions of the individual objects are found first, and then a virtual plate is constructed with the help of data from the guide stars and check stars. ... Corrections based on guide star data are referred to as POSITION mode dejittering , and those based on check star data are called drift corrections . ... The adjustments to the astrometry centroids from this POSITION mode dejittering correction are typically about 1 mas. ...

... All sky cameras at Armagh Observatory and Emyvale . Armagh Observatory meteor cameras . ... My ramblings on impacting asteroid 2008 TC3 . ... Novel by Armagh observatory astronomer: Nemesis . ... Go to Armagh Observatory home page . ... I am a Research Fellow at Armagh Observatory. ... The EURONEAR project (European Near Earth Asteroids Research) . Armagh solar system research topics . ... Armagh Observatory impact hazard page . ... Spaceguard UK and the Spaceguard Centre . ...

... Bad Astronomy . Misconceptions . ... I have a fun video on how to stand an egg on end on my blog at Discover Magazine . ... At the end of the show, one of the characters looks up the words "egg" and "equinox" on the web... and says it sent him to "thingsthatarewrong.com". ... Bad Astronomy : Only on the day of the Vernal (spring) Equinox, can you stand a raw egg on its end. Good astronomy : If you can stand a raw egg on end, it has nothing to do with the Equinox. ... 2008 Phil Plait. ...

... Reflective targets are placed on each panel (38000+) . ... Back fit for camera position and determine position of each target (no distance scale, only angles). ... North/south support cables have tieback cables that can be adjusted to pull the cable catenary close to the spherical shape. ... Errors along each north/south set of targets (.pdf) . median and rms Errors for each north/south set of targets (.pdf) . ... Red are targets above north/south support cables, red are in between . ...

... Astronomy search engine . ... PhysicsWeb Home Page . ... Sternberg Astronomical Institute . ... Astro Space Center Home Page . ... Landau Institute for Theoretical Physics . ... Astronomy and Space Physics Dept of Kiev University . ... NATIONAL RADIO ASTRONOMY OBSERVATORY Home Page . University of Hawaii - Institute for Astronomy . ... Space Telescope Science Institute Home Page . ... Sky & Telescope: The Essential Magazine of Astronomy . ... Springer LINK - Physics Online Library . ... Home . ...

... A document window is shown, with 8 lines (numbered 1 to 8), each 24px high. The text of the "outer" box (at the end of line 1, halfway into line 2, and halfway into line 3) is shifted upward 12px. The text of the "inner" box, thought shifted upward as well, has been relatively positioned so that it lies in its normal flow position at the end of line 2. ... The lines, as they appear in the image, contain: Start 1 Beginning of body contents. 2 of outer contents. Inner contents. ...