... Avec le plus simple des ?quipements, vous aussi pouvez effectuer des mesures de masse semblables ? ... Des objets lourds et compacts dont la masse doit ?tre mesur?e. Je me suis servi de deux gros boulons, pesant 50 et 120 grammes. Une montre capable de compter les secondes . De petits poids. (j'ai employ? des poids de cuisine mesurant 0-500 grammes) . ... Avec une balance , cherchez les poids m 1 et m 2 des deux objets, et de m?me le poids m 0 de la pince utilis?e pour les maintenir. ...

... News . ... Star Atlas . ... stars . ... Reader Photo Gallery . ... I read that once every second, somewhere in the universe a massive star ends its life as a supernova. How does that compare to the rate of new star formation? ... Let s look at the rate of new star formation nearest to us in our galaxy. ... A few years ago, scientists used the Spitzer Space Telescope to study the Milky Way s plane where nearly all new stars form and found a birth rate of 0.68 to 1.45 solar masses per year. ...

... Over the first 4 years, its X-ray telescopes eROSITA and ART-XC will survey the whole sky with a record sensitivity in the 0.5-10 keV energy band. ... The goal of the second international Spectrum-RG conference is to discuss the different scientific topics addressed by the mission, synergies with surveys at other wavelengths, and requirements to follow-up observations.Contributed talks and poster presentations are invited on the topics related to the SRG science goals. ... Active galactic nuclei . ...

... Not only can the Sun turn night to day, it can transform obscure 1950s jingles into 1990s alternative-rock hits. ... The sun is a mass of incandescent gas, . ... Studying the Sun can tie together subjects across the curriculum. ... Sunspots and prominences--the tongues of hot plasma which shoot off the Sun's surface and arch gracefully back, following the invisible tethers of magnetic field lines--are just two examples of solar volatility. ... The black dots will be easy to see. ...

... SS433 is a close binary system, one star is a supergiant, a second one is a black hole. ... Even a black hole cannot accept such an enormous mass flux, a supercritical accretion disk appears, all the excess gas glows up to several tens of thousands degrees and is ejected off the disk with enormous velocities. ... SAO researchers have found an evidence of the supercritical accretion onto a black hole in SS433, which follows from a brightness variability of the SS433 disk. ...

... Астронет | ... Переменные Звезды | ... Микролинзирование . ... На протяжении последних нескольких лет в рамках проекта MACHO проводятся наблюдения микролинзирования звезд Большого Магелланова Облака - спутника нашей Галактики. Эффект микролинзирования заключается в гравитационной фокусировке света звезды массивным объектом, находящимся на луче зрения между звездой и наблюдателем. ... Согласно некоторым гипотезам, линзами могут являться реликтовые черные дыры или "нейтралинные звезды". ...

Next: Evolution in massive binaries Up: Binary Neutron Stars Previous: Binary companions and their . X-rays result from accretion phenomena in general . Many black hole candidates in contrast to radio pulsars . Again classified on the basis on companion mass . Most high mass systems are X-rays pulsars . Only 3 low mass systems are X-ray pulsars! ... Many evolutionary links to radio pulsars . few seconds < P < few hundred seconds . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The Cloud: 10 pc, 10 4 M sun , 10 8 yr . supersonic)turbulence, magnetic (ambipolar) diffusion . ... The Clumps: 2-5 pc, 10 3 M sun , 10 7 yr . magnetic energy, rotational braking . ... Cores: 0.1 pc, 1 M sun . ... Collapse: . isothermal free-fall phase, 3 10 5 yr . adiabatic phase, optically thick . second collapse phase: dissociation of H 2 . ... Class 0: 10 4 yr . ... molecular jets and shocks . ...

This document describes how to efficiently serve an arbitrary number of virtual hosts with Apache 1.3. ... get the server name from the Host: header UseCanonicalName Off # this log format can be split per-virtual-host based on the first field LogFormat "%V %h %l %u %t \"%r\" %s %b" vcommon CustomLog logs/access_log vcommon # include the server name in the filenames used to satisfy requests VirtualDocumentRoot /www/hosts/%0/docs VirtualScriptAlias /www/hosts/%0/cgi-bin . ...

... Adrastea and Metis lie within Jupiter's main ring and may be the source of material for the ring. ... Galileo Image of Adrastea . ... The longest dimension of Adrastea is approximately 20 kilometers (12 miles) across. ... These images, taken by Galileo's solid state imaging system between November 1996 and June 1997, provide the first ever "family portrait" of the four small, irregularly shaped moons that orbit Jupiter in the zone between the planet's ring and the larger Galilean satellites. ...

... Posts tagged ?massive data? ... Tags: bimodality , chi-square minimization , Classification , CMD , Estimation , machine learning , massive data , model based , PCA , spectral analysis , spectroscopic , survey , VO . ... Algorithms arXiv Astro Bad AstroStat Bayesian CHASC Cross-Cultural Data Processing Fitting Frequentist Galaxies gamma-ray High-Energy Imaging Jargon Job Languages MC MCMC Meta Methods Misc News Nuggets Objects Optical Physics Quotes Spectral Stars Stat Timing Uncertainty X-ray . ...

Class 1 Introduction, Background History of Modern Astronomy The Night Sky, Eclipses and the Seasons Kepler's Laws Newtonian Gravity General Relativity Matter and Light Telescopes Class 2 Solar System Characteristics Formation Exosolar Planets Class 3 Stars The S un Stellar Evolution of Low and High Mass Stars Deaths of Stars Exotic Stars Class 4 Galaxies Galaxy Classification Formation of Galaxies Galactic ... Low mass stars live and die differently than high mass stars. ...

... Measurement of the MASS detectors parameters with mass program January 24, 2015 [112707] . MASS/DIMM electronics. ... Turbina-core(D): Dimm User Guide. ... N.Shatsky, V.Kornilov, The revision of the MASS/DIMM star catalogue. ... О.Возякова, В.Корнилов, Н.Шатский, Новое программное обеспечение прибора MASS/DIMM. ... V.Kornilov, N.Shatsky, S.Potanin, O.Voziakova, B.Safonov Preliminary results of astroclimate parameters measurements at the Sternberg 2.5m telescope installation site. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Universe Today . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. Hey, it's either this or one of those really irritating PayPal donation buttons here. ... One of the biggest questions about neutrinos is whether they have mass or not. ... If these little guys have mass, then by the virtue of their numbers alone they may actually contribute significantly to the mass of the Universe, and that is a very big question indeed. ...

Bigbang Forum Message . Forums: . ... Post . ... Mass Is Negative Space . ... Post Message | ... In negative space you have the converse: the gravity/mass indicative axis points inward and is the acceleration axis, and the charge characteristics are the curved momentum axes. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Российские и итальянские ученые начинают совместные исследования темной материи Вселенной . 08-09-2004 12:09 Rambler Mass Media . ... вплоть до кольца D. Он лежит ближе к планете, чем все пояса, найденные ранее.. ... поиску следов воды на "красной планете". ... 21-12-2003 20:46 Rambler Mass Media . ... Mars Express прислал первые снимки Красной планеты . ... Космический аппарат Mars Express, отправившийся в июне к Марсу, прислал на Землю фотографии Красной планеты. ...

University Satellites and . Space Science Education . ... It is necessary to select a topic interesting from scientific point of view and simple enough to allow students understand and participate in all stages of experiment from measurements via data analysis to physical inference. ... Solar modulation effects and physical characteristics and analysis of the major solar events are possible only by joining data from space-born and surface particle and radiation detectors. ...

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: . ...

Next: Imaging by an Optimizing Method . ... A big advantage of this numerical integrator is its stability: the error in the semi-major axis and the eccentricity depends only on the step size and does not grow with an increasing number of time steps. ... As the integration time increases, the numerical results become more contaminated by various errors. ... A new symplectic integrator produces no secular truncation errors in the actions of a Hamiltonian system. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualit†йs . des reportages . ... 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 Deux super-Terre d†йcouvertes autour de jumeaux du Soleil . ... Pour la premi†иre fois, deux super-Terre (des plan†иtes de faible masse) ont †йt†й trouv†йes autour d'†йtoiles comparables en masse et en †вge au Soleil. ...