... Where do the most massive stars form? Observational evidence indicates that the outskirts of developing open clusters of stars are primary locations. ... Visible in the image center are massive stars in the open cluster. ... The Horsehead Nebula . ... Also known as Barnard 33, the unusual shape was first discovered on a photographic plate in the late 1800s. Ganymede: Torn Comet Crater Chain . ... The South Pole of Mars . ... Stars, like bees, swarm around the center of bright globular cluster M15. ...

... STEPS OF ISS ASSEMBLY . ... STEPS OF THE ISS ASSEMBLY All flights 09/30/2009 - up to now 11/15/2008 - 09/30/2009 10/23/2007 - 10/24/2008 12/10/2006 - 10/21/2007 02/28/2005 - 10/26/2006 02/28/2005 - 09/08/2005 04/19/2004 - 02/27/2005 04/26/2003 - 05/24/2004 09/25/2002 - 02/04/2003 04/25/2002 - 09/24/2002 11/26/2001 - 04/15/2002 06/12/2001 - 10/31/2001 02/26/2001 - 05/23/2001 10/12/2000 - 02/20/2001 08/06/2000 - 09/20/2000 07/12/2000 - 07/26/2000 11/20/1998 - 05/29/2000 . ... Station element . ...

... 2001 February 7 . Distant Open Cluster M103 . ... Explanation: Bright blue stars highlight the open cluster known as M103 . The gas clouds from which these stars condensed has long dispersed. ... In fact, a formerly blue star has recently evolved off the main sequence and is visible above as the red giant star near the cluster center. In general, yellow stars like our Sun are usually less bright and hence less prominent in open clusters than their massive blue cousins. ... About APOD | ...

... ESO, the European Southern Observatory . ... ESO's Governing Bodies . Member States . ... United Kingdom . ... Green ESO . ... Survey Telescopes . ... Galaxies . Galaxy Clusters . ... VLT Unit Telescopes Names . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... ESO 1-metre Schmidt telescope . ... This video shows the distant merging galaxy cluster ACT-CL J0102тИТ4915. ... This newly discovered galaxy cluster has been nicknamed El Gordo тАФ the "big" or "fat one" in Spanish. ...

National Aeronautics and Space Administration . ... Carl E. Walz (Colonel, USAF, Ret.) NASA ASTRONAUT (FORMER) . ... NASA EXPERIENCE: Selected by NASA in January 1990, Walz is a veteran of four space flights, and has logged a total of 231 days in space. He was a mission specialist on STS-51 (1993), was the Orbiter flight engineer (MS-2) on STS-65 (1994), was a mission specialist on STS-79 (1996), and served 196 days in space as flight engineer (FE-1) on ISS Expedition-Four (2001-2002). ...

... Updated 2008 December 22nd . ... Updated 2008 December 18th . ... Updated 2008 December 17th . ... Updated 2008 December 16th . ... Updated 2008 December 15th . ... Updated 2008 December 10th . ... Updated 2008 December 2nd . ... Some Videos on our Web Sites . ... Cool October . ... Updated 2008 October 31st . ... Updated 2008 October 15th . ... Updated 2008 October 10th . ... Updated 2008 October 9th . ... Updated 2008 October 8th . ... Updated 2008 October 7th . ... Updated 2008 October 2nd . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . Colin Johnston . ... Space Flight . Human Exploration . Robot Exploration . ... Science Fiction . ... Thanks to extensive training and consummate professionalism, the two astronauts successfully and without a fuss fixed the problem . ... Article by Colin Johnston, Science Communicator) . ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

Euro-Asian Astronomical Society . The International Astronomy Olympiad . ... On the basis of the present Founding Statutes the Coordinating Council of the International Astronomy Olympiad elaborated and if necessary replenishes the "Acting Statutes/Regulations on International Astronomy Olympiad of School Children" which are approved at the meeting of authorized representatives from the founding organizations and participating states held every year during the Olympic period . ...

AN X-RAY TOUR OF MASSIVE STAR-FORMING REGIONS WITH CHANDRA Not Your Grandmother's HII Regions Leisa Townsley Patrick Broos Eric Feigelson Gordon Garmire Konstantin Getman Junfeng Wang The Penn State Chandra/ACIS Star Formation Group Orion: Chandra Orion Ultradeep Project (COUP, PI Feigelson) 2005, ApJS 160 30 Doradus diffuse: Townsley et al. ... 14 O stars, several form a 1 ring. 15 в 15 2MASS image The 40-ksec Chandra/ACIS-I observation of M17 (17 в 17): 0.5­2 keV; 2­8 keV. ...

... Star Atlas . ... Behemoth black hole found in an unlikely place . ... black holes . ... If a supernovaт??s original star is massive enough to form a black hole, why is there any explosion? Why doesnт??t the entire mass of the original star simply fall onto the newly formed black hole and instantly vanish? ... For some massive stars, it may be possible that collapse leads directly to the formation of a black hole with no explosion. ... Get instant access to subscriber content on Astronomy.com! ...

... STScI-PRC00-08 HUBBLE OPENS ITS EYE ON THE UNIVERSE AND CAPTURES A COSMIC MAGNIFYING GLASS Scanning the heavens for the first time since the successful December 1999 servicing mission, NASA's Hubble Space Telescope has imaged a giant, cosmic magnifying glass, a massive cluster of galaxies called Abell 2218. ... The cluster is so massive that its enormous gravitational field deflects light rays passing through it, much as an optical lens bends light to form an image. ... Blue pinpoints hot young...

Stellar Clusters are very useful laboratories for empirically studying stellar evolution. ... All cluster stars are at the same distance . All cluster stars have the same physical age . ... CM diagram Young Cluster In this case we see the Main Sequence fully represented. The blue dots represent massive stars with short main sequence lifetimes. ... Thus, identifying the most massive star which is still on the main sequence is an effective means of determining the age of a stellar cluster. ...

... Team . ... V.V.Sokolov "The gamma-ray bursts, core-collapse supernovae and global star forming rate at large redshifts" . ... I.V.Sokolov, A.S.Moskvitin, Eda Sonbas, O.V.Verkhodanov, O.P.Zhelenkova "A galaxy cluster in the GRB 021004 field" . ... The monitoring of GRB afterglows and the study of their host galaxies with the SAO RAS 6-m telescope from 1997". ... A.S.Moskvitin, T.A.Fatkhullin, V.V.Sokolov and V.N.Komarova, "Spectral and photometric monitoring of CCSNe at SAO RAS" . ...

... Some facts about former Soviet and now Russian space program. ... Квант? - специализированный астрофизический модуль России для работы в составе орбитального комплекса ?Мир?. ... Масса 11 т, длина 5,8 м, максимальный диаметр 4,15 м, масса полезного груза 4,1 т. Сближение и стыковку модуля со станцией обеспечивал функциональный служебный блок, оснащенный двигательной установкой (начальная масса модуля и блока 20,6 т). ... Звезда? - российский Служебный модуль Международной космической станции (МКС). ...

... GSAOI Home . ... Science . ... Deep imaging at J , H , and K is required to identify all stellar objects, brown dwarfs, and planetary mass objects in the central region of the Orion Nebula Cluster down to masses comparable to that of Jupiter. This is required to establish the initial mass function, i.e., the number of stars of each mass that have formed, in this region of intense massive star formation. ... The fields of the GSAOI detectors are shown as four green squares in each frame. ...

... International workshop “The Europa Lander: science goals and experiments” is organized by the Space Research Institute (IKI) of Russian Academy of Sciences, on February 9-13, 2009, in Moscow, Russia. The workshop will last 5 days including the days of arrival/departure and some sightseeing events, and focus on the scientific goals and technical aspects of the project, key issues of Europa science with the special emphasis on astrobiology and requirements to scientific instruments. ...

Pulsars can be used to study the strong nuclear force. The density of matter at the center of neutron stars is one or two orders of magnitude larger than the density of atomic nuclei. ... Very "soft" EOSs predict lower pressures for a given density, i.e., highly compressible matter. ... If more precise measurements can confirm this high value, then many model EOSs for dense matter can be ruled out. ... Another way of studying the behavior of super-dense matter is to find fast pulsars. ...

... Dept. for Physics of Stars&Galaxies . ... Using a database view Sloan Digital Sky Survey (SDSS), containing almost a million spectra created 15,000 sample galaxies with active star formation, which is used for various studies and physical state of evolution of galaxies. ... Star clusters of the Galaxy . The project MWSC (Milky Way Star Clusters) directory using 2MASS, which includes nearly 500 million vision to the limit Ks = 15.3, analyzed more than 4,000 cluster-like objects in the galaxy. ...

. Pulkovo Observatory of Russian Academy of Sciences is situated . near Saint-Petersburg. It was founded in 1839. 196140, Saint-Petersburg, Pulkovskoye chaussee 65/1 . English version . Russian version . This page has been accessed times since May 1, 1999.

... Kopylov, A.I., Kopylova, F.G. "Structure of galaxy groups and clusters and measurement of their masses", . ... Kopylova, F.G., Kopylov, A.I. "Peculiar motions of galaxy clusters and groups in the Hercules and Leo supercluster regions", . ... Kopylova, F.G., Kopylov, A.I. "Analysis of the properties of clusters of galaxies in the region of the Leo supercluster", . ... Kopylova, F.G., Kopylov, A.I. "Analysis of the properties of clusters of galaxies in the region of the Ursa Major supercluster", . ...