Astronomy Discussion Forums . ... NASA Featured In New Nat Geo Documentary . ... Post Message | ... Hunt for Aliens features Peter Smith, Richard Greenberg, University of Arizona; Geoff Marcy, University of California Berkeley; Debra Fisher, Yale, Seth Shostak, SETI; Simon Conway Morris, Cambridge University; and GeoffreyLandis, NASA. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... 8, ``Celestial Mechanics'', 2002 Parameterization of the Solar Radiation Pressure model for GPS satellites I. S. Gayazov Institute of Applied Astronomy, St. Petersburg, Russia The treatment of solar radiation pressure (SRP) effect until now is the main problem in precise modeling of GPS satellite orbits. ... In practice, however, all seven parameters of the empirical model cannot be confidently determined from phase observations. ... Bar­Sever Y. E. A new model for GPS yaw attitude. ...

... Center for International Education . ... Botanical Garden . ... The University Botanical Garden is a research and conservation institution. ... The Botanical Garden provides access to its research facilities for students of universities, vocational schools, lyceums, schoolchildren and organizes advanced training courses. ... The Botanical Garden is also a member of Botanic Gardens Conservation International and has established cooperation with 230 biological institutions in 40 countries of the world...

... Aims: Today, large ground-based instruments, like VISIR on the VLT, providing diffraction-limited (about 0.3 arcsec) images in the mid-infrared where strong PAH features appear enable us to see the flaring structure of the disks around Herbig Ae stars. Although great progress has been made in modelling the disk with radiative transfer models able to reproduce the spectral energy distribution (SED) of Herbig Ae stars, the constraints brought by images have not been yet fully exploited. ...

... Courtesy of NASA/ESA Observation data (J2000 epoch) Constellation Right ascension Declination Redshift Distance Type Serpens Caput 15h 17m 14.4s[] +21° 35 08[] 12,740±50 km/s[][1] 600±30 Mly (183±8 Mpc)[1] SA0(r) [citation needed ] [a] Apparent dimensions (V) 0.28 в 0.28[] Apparent magnitude (V) 16.0[] Notable features Ring galaxy Other designations PGC 54559,[] PRC D-51[] See also: Galaxy, List of galaxies Hoag's Object is a non-typical galaxy of the type known as a ring galaxy. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... Ciel Espace, nouvelle formule, c'est . des actualit†йs . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Le trou noir de la Voie lact†йe †а la di†иte . ... Des scientifiques am†йricains ont compris pourquoi le trou noir central de la Voie lact†йe, Sagittarius A*, est beaucoup moins actif que ses cong†йn†иres. ...

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

... 1 Figure 1: The density distribution in R­Z plane Figure 2: The luminosity distribution in R­Z plane for Maxwellian kick velocity (75 km/s) 2 Figure 3: The luminosity distribution in R­Z plane for Maxwellian kick velocity (150 km/s) n(R; Z) = nHI + 2 \Delta nH2 nH2 = n 0 \Delta exp џ \GammaZ 2 2 \Delta (70pc) 2 – If 2kpc џ R џ 3:4kpc, then nHI = n 0 \Delta exp џ \GammaZ 2 2 \Delta (140pc \Delta R=2kpc) 2 – ; For R џ 2kpc n(R; Z) was assumed to be constant: n(R ! ...

... A MATHEMATICS PROGRAM IN ENGLISH . ... The Independent University of Moscow , the Higher School of Economics , the Moscow Center for Continuous Mathematical Education invite foreign students (undergraduate or graduate students specializing in mathematics and/or computer science) to spend a semester in Moscow in the framework of our MATH in MOSCOW program. ... You can now gain from the expertise of Moscow mathematicians without learning Russian: all courses in the MATH in MOSCOW program are in...

... Building Museum Quality Replicas of Galileo's Telescopes . ... This month's meeting will feature Jim and Rhoda Morris speaking on their replicas of Galileo's telescopes. ... With their background as physicist and chemist and their experimental skills the authors set about to make the most accurate replicas of these telescopes in existence today. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

Crater Gassendi . ... I made this drawing was made on the 26th of november 2001. If you compare this one with the previous drawing of Gassendi (below) the differences are clear. ... This drawing was made on the 28th of september 2001. After nearly a full month without observations I had a one hour gap between the thicker clouds. ... This drawing was made on the 29th of august 2001. ... This drawing was made on the 27th of august 2001. ... This drawing was made on the 25th of august 2001. ...

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. ...

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . General information Main characteristics of the Radio telescope Observing programs General view of the antenna array Main research areas Principle of generation of radio images Radio telescope 's beam Receiving systems Main characteristics of the base receiving-recording complex Calibrations Data archive and databases Publication SSRT - Siberian Solar Radio Telescope . ...

... The BURAN orbiter is the first reusable manned space vehicle in our country. The BURAN orbiter is the space airplane which may descent from an orbit and land to an airdrome . ... BURAN orbiter . ... CREATION AIRFRAME OF THE BURAN ORBITAL SPACESHIP . ... Radio-Navigational Maintenance of the Atmospheric Descent and Landing of the BURAN Orbital Spaceship " by Shcharensky V.A.; . ... Landing Complex for the BURAN Orbital Spaceship " by Yakhno V.A., Studnev V.V.; . ... FROM SPIRAL TO MAKS . ...

... Structure of Data . ... Catalog . ... Catalog: 206 clusters 32 clusters: known before 12 clusters: parameters from BVRI photometry @ SAO 1-m 0 clusters: parameters from UBVRI photometry @ Maidanak 1.5-m 26 clusters: parameters from 2MASS 168 clusters: new (2MASS) 142 clusters: parameters from 2MASS 26 clusters: embedded 0 clusters: parameters from BVRI photometry @ SAO 1-m 3 clusters: parameters from UBVI photometry @ ARIES 1.04-m 0 clusters: parameters from UBVRI photometry @ Maidanak 1.5-m . ...

UPPER PANEL: The gas surface density map in log scale. The red circle in the center represents the central protostar. The development of spiral structure in the protostellar disk is evident. Dense protostellar/protoplanetary clumsp form within the spiral arms and are driven into the protostar by the action of gravitational torques. LOWER PANEL: The mass accretion rate onto the protostar as a function of time. The mass accretion rate is characterized by very short ( . ...

P.N. Lebedev Physical Institute Astro Space Center Russian Academy of Sciences S.A. Lavochkin Association, Roscosmos RADIOASTRON The Ground ­ Space Interferometer: radio telescope much larger than the Earth The Spectr-R Project http://www.asc.rssi.ru/ radioastron / High- Resolution HI 21 cm Mosaic of M 33 galaxy GENERAL OUTLINE The RadioAstron ... Such forecast could be used to prepare a long time-scale schedule of scientific observations. ...

. Composition | Objectives | Capabilities and samples | Request for work | Back to main page . If you have any questions, please contact us: rp@iszf.irk.ru . http://esceir.iszf.irk.ru/lchmen/ris1en.htm . Last modification: 2.06.01.

... Charles J. Camarda (Ph.D.) . ... AWARDS: б  NASA Certificates of Recognition (12); Sustained Superior Performance Awards (2); Special Achievement Awards (2); Technology Commercialization Awards (2); Space Station Program Team Excellence Award; NASA Group Achievement Award; NASA Superior Accomplishment Award; NASA Honor Award; One NASA Peer Award; Research and Development 100 Award from Industrial Research Magazine for one of the top 100 technical innovations in 1983, a Heat-Pipe-Cooled Sandwich...

... April, 2010: APOLLO detects lost Soviet reflector . October, 2009: LCROSS event. May, 2009: APO featured on PBS film 400 Years of the Telescope . April 3, 2009: For the International Year of Astronomy , APO is featured in a 20-minute segment during a 100-hour webcast. ARC 3.5m | ... Instrument News: Current Status . Instrument Summary . ... ARCES (Echelle) . ... Current Weather . Weather Status . ... Weather Plots . ... APO Password Access . 3.5m Nightlogs . ...