... Bad Astronomy . ... Bitesize Astronomy . ... even the brightest star won't last forever.' ... The pressure and heat are so enormous inside the star's core that hydrogen is fused into helium. ... A star like the Sun has enough hydrogen to keep its fusion fires going for billions of years, but a star like Rigel, a massive star in Orion, burns its hydrogen so fast it may run out in just a few million years. ... The problem is, at this point something bad happens: silicon fuses to iron. ...

HI envelopes around HII regions . ... We have investigated 32 HII regions and around 17 of them we have found the clumped HI envelopes with radial motions. The example of the envelope around HII regions M16 is shown on figure 1. ... The thickness of envelopes is rather great - 0.44 radius, mass are about 6E+4 mass of the Sun, kinetic energies - 10E+50 ergs. ... The model of formation of HI envelope was advanced as outcome of an operation of a summarized stellar wind of stars, exciting HII region. ...

Galileo showed convincingly that heavy objects fell no faster that light ones. ... If an iron ball was pulled down with a much greater force than a wooden one of the same size, why didn't it fall any faster? ... 1) It is harder to lift. ... It is the fact that the loaded wagon has a greater mass that gives it a larger inertia , a larger tendency to oppose any change in its state of rest or of constant motion in a straight line. ... One important quantity was the body mass of the astronauts. ...

... There are preliminary series of photometric and radio spectral observations of the above-mentioned stars, archival data on the light curves of the stars, results of the search for OH and H 2 O maser emission in IRAS point sources that possess the IR parameters similar to Miras. ... The aim is a detailed study of the maser emission variability. ... In 1996-1997, astronomical observations of Mira Ceti-type stars (miras) were carried out in three spectral ranges: optical, infrared, and radio. ...

Scale-heights of the Galactic disk subsytems with different ages and metallicities . V.Marsakov & Yu. ... It is based on the fact, that all stars cross the disk plane several times during their Galactic orbital period. ... We have used our representative sample of nearby disk F2-G2 stars Marsakov & Shevelev (1995) in which fundamental stellar parameters was determined on the basis of published date on uvby-photometry, proper motion and radial velocities. ... Marsakov V.A., Shevelev Yu.G. Bull. ...

ALBUM: paranoid Artist: Black Sabbath Album: Paranoid @SONG: "War Pigs" Generals gathered in their masses just like witches at black masses evil minds that plot destruction sorcerers of death's construction in the fields the bodies burning as the war machine keeps turning death and hatred to mankind poisoning their brainwashed minds, oh lord yeah! Politicians hide themselves away they only started the war Why should they go out to fight? ... We'll just pass him there why should we even care? ...

. To see a Russian version of this page click here . (Senior Researcher. Graduated from Moscow State University (MSU) in 1982, Ph.D. 1986, MSU) . A member of EAS and IAU. Fields of interest: hot massive stars, close binary systems: optical photometric and spectral observations, X-ray observations; ill-posed problems, X-ray astrophysics. My publications (ADS link) . Linux on CLEVO 8750 (old stuff) . Phones/addresses of my university mates graduated in 1982. E-mail: igor@sai.msu.ru .

In Memory of Vsevolod Gantmakher . ... Having received his Ph.D. in 1964, V. Gantmakher continued work at the Institute of Solid State Physics (ISSP) of the USSR Academy of Sciences, which had been founded a year before. For the next three years, he worked on his D.Sc. thesis at IPP. ... For many years, as an outstanding personality and highest scientific authority, V.Gantmakher made a remarkable contribution to creating a friendly atmosphere and a creative approach to the research work at ISSP. ...

... Recherche dans le site : . Ciel Espace, le magazine qui vous guide toujours plus loin . ... 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 Une supernova cach†йe dans la galaxie M82 . ... A la une . ... А cause de l'†йnorme quantit†й de poussi†иre interstellaire contenue dans la galaxie M82, la supernova qui a explos†й d†йbut 2008 est pass†йe inaper†зue. ...

... LMC Project Outline . NGC 1818 Initial Results . ... The Large Magellanic Cloud (LMC) is uniquely suitable for the study of massive star clusters at all stages of evolution. By combining HST observations of these clusters with N-body models we hope to understand the origin and evolution of rich star clusters in our own Galaxy, in the LMC, and beyond. ... We aim to combine our HST observations with N-body models to understand the formation and evolution of globular clusters. ...

... Abubekerov M.K., Lipunov V.M. "The Lower Temperature Limits Of Accretors" Astronomy Reports, 2003, Vol. 47, Issue 8, pp.679-684. ... Abubekerov M.K., Antokhina E.A., Cherepashchuk A.M. "The Masses of X-ray Pulsars in Binary systems with OB Supergiants" Astronomy Reports, 2004, Vol. ... Abubekerov M.K., Antokhina E.A., Cherepashchuk A.M., Shimanskii V.V. "The Mass of the Compact Object in the Low-Mass X-ray Binary 2S 0921-630" Astronomy Reports Astronomy Reports, 2006, Vol.50, Issue 7, pp.544-552. ...

... Meta Index / Home Page / Source Flagging Algorithms Any source either having a raw count-rate >= 80, or with quality flag bit 4 set (mod-8 pattern) is checked for "close" neighbours, which may be flagged. ... Check each source in the vicinity of the bright source . ... Compute the maximum distance for flagging the source from maxRad = max(exclusionradius, min(70.0, 35.0 * countTable(i) // 80.0) ) If the flagging is done by omdetect, the exclusion radius is determined from the algorithm at the end . ...

... Astronomy news . ... Double Engine Fuels Star's Remarkable Nebula . ESO has just released a stunning new image of a field of stars towards the constellation of Carina (the Keel). ... Interactions in this double system, surrounded by a dusty disc, may be the engine fuelling the star s remarkable nebula. The new image, showing a very rich field of stars towards the Carina arm of the Milky Way, is centred on the star HD 87643, a member of the exotic class of B[e] stars [1]. ...

Тема : IC 2118 Witch Head Nebula - отражательная туманность Голова ведьмы в созвездии Эридан (Eridanus) .. ... IC 2118 Witch Head Nebula - отражательная туманность Голова ведьмы в созвездии Эридан (Eridanus) .. Туманность Голова ведьмы (IC 2118 Witch Head Nebula) или Большая туманность Пси Эридана (Great Nebula of Psi Eridani) в созвездии Эридан (Eridanus) .. ... Туманность IC 2118 Witch Head Nebula это огромное облако газа и углеродной пыли имеющей голубой цвет .. ... IC 2118 Witch Head Nebula .: ...

... 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. ...

The divisity of galaxies. The galaxies are the giant (to hundred of billions of stars) star systems, where the stars are connected by gravitation laws with each other. ... Ther galaxy NGC 3031 . ... Each spiral galaxy has a core a flat disk where the spiral brancher locate. The stars and interstellar substance of spiral galaxies rotate around the core. ... In normal galaxies, such as our Galaxy, the great brightness of the core is accounted for the high concentration of stars. ...

Meade ETX, A Telescope For The Masses. Articles | ... Currently, I have a favorite recommendation that I give to these telescope hungry, eager to learn types - the Meade Instrument Company's ETX-90EC. Specifically, the recommendation is the ETX-90EC with three options that, in my usage experience, are essential: the Autostar(tm) #497 computer control paddle, the #825 right-angle viewfinder scope, and the # 883 Deluxe Field Tripod. ... www.astronomy.net . About Astronomy Net | ...

... Project page . ... Project workpage . Turbulence in the Multiphase Interstellar Medium . Project I | ... Project highlight | ... Towards simulating turbulence with adaptive meshes . ... A. Kritsuk, P. Padoan, M. Norman . ... A. Kritsuk M. Norman . ... A. Kritsuk, M. Norman, P. Padoan . astro-ph/0411626 | ... P. Padoan, A. Kritsuk, M. Norman, A. Nordlund . ... Introducing Enzo, an AMR Cosmology Application . B. O'Shea, G. Bryan, J. Bordner, M. Norman, T. Abel, R. Harkness, A. Kritsuk . ...

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

... The RAS Meteorite Collection: State on the 1 st of June, 1999 . ... About the laboratory . ... Chondrite . ... Fall 05 March 1960. 16 masses, the largest is 2.5 kg . ... Find 1991. One mass of about 9 kg . ... One mass of 532 g . ... Find 1889. 8 masse totaling 124.877 kg . ... Find 1915 and 1940. 2 masses, 736.6 kg and 24.1 kg . ... One mass of 122 kg . ... One mass of 3624 g . ... One mass of 1169.5 kg . ... One mass of 3.568 kg . ... One mass of 9.3 kg . ... One mass of 51,642 kg . ...