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. ...

... The Stellar IMF at Low Masses: A Critical Look at Variations and Environmental Dependencies . ... View Registration . ... The shape of the stellar initial mass function (IMF) is one of the main uncertainties in our understanding of star formation, i.e., the conversion of gas into stars over cosmic time. ... The main purpose of this workshop is to have a critical look at current and new evidence for variations of the IMF at sub-solar stellar masses. ... The registration fee is $200.00. ...

So the evidence for Dark Matter is fairly overwhelming. ... Theory: if the Universe is closed then all the luminous matter seen in galaxies contributes only 0.5% of the mass required to eventually halt the expansion . ... This means that galaxies are surrounded by dark matter halos which trapped baryonic gas (e.g. hydrogen) and turned it into stars. ... WIMPS - weakly interacting massive particles created in the extremely early universe . ... Theory 99% of the Universe is Dark Matter . ...

... Observatory tours are usually conducted by the Librarian, who in 2000 showed approximately 500 individuals from 19 different countries around the Observatory. These figures highlight the success of the Armagh Observatory's `open door' policy to attract visits by interested members of the public, groups and societies. ... In addition to tours, the Observatory also organized several public lectures, and hosted a number of special events during 2000. ...

... The difference is that inertia is an inherent property of matter, while weight also depends on gravity. ... They use gravity, balancing its force on the astronaut's body against a calibrated spring or against the force of gravity on some calibrated weights. ... Using scales and the local force of gravity, one can determine gravitational mass; or else, one might dispense with gravity, like the astronauts aboard Skylab, sand measure the "inertial mass," and in principle they may differ. ...

home education > resources . ... Resources . ... Astronomy Education Bibliography . ... Black Holes: An Introductory Resource List . ... Castelvecchi, D. "A New Breed of Black Hole" in Sky Telescope , Apr. 2006, p. 36. ... Charles, P. Wagner, R. "Black Holes in Binary Stars: Weighing the Evidence" in Sky Telescope , May 1996, p. 38. ... Nadis, S. "The Secret Lives of Black Holes" in Astronomy , Nov. 2007, p. 28. ... Nadis, S. "Black Holes: Seeing the Unseeable" in Astronomy , Apr. 2007, p. 26. ...

... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Dynamical models of multiple globular cluster populations around massive galaxies . ... Different techniques have been devised to separate multiple GC populations and perform dynamical analyses. ... Within this project, the PhD candidate will examine mock models of multiple GC populations around massive galaxies, devising `blinded' functional tests and comparing the possible sources of bias in different techniques....

... The gravitational lens effect of the red, foreground, elliptical galaxy visible near image center creates a cloverleaf image of the single distant quasar. ... NGC 1850: Gas Clouds and Star Clusters . ... Globular clusters only 40 millions of years old can still be found in the neighboring LMC galaxy, though, but perhaps none so unusual as NGC 1850. The Coma Cluster of Galaxies . ... Stars Without Galaxies . ... Galaxies are made up of stars, but are all stars found within galaxies? ... March . ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Observing Podcasts . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Seasonal Observing . ... How massive must a colliding body be to disturb Earth's orbit? ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter...

Next: Star Formation Rate and Up: No Title Previous: Calculation of Evolutionary Tracks . To start calculations, we choose the distributions of the initial binary parameters: the mass of the primary ZAMS component, , binary mass ratio, , orbital separation a . ... whereas the mass ratio distribution is not. ... The zero assumption often made is that the mass ratio distribution has a flat shape, that is binaries with a high mass ratio occur as frequently as those with equal masses. ...

LIPSKIY-RODIONOVA' LUNAR ANTIPODES AS PRECURSORS OF A REGULAR WAVE PLANETOLOGY G.G.Kochemasov IGEM of the Russian Academy of Sciences, Moscow, Russia kochem@igem.ru / Fax: (009)(095)230 21 79 The first observations of the lunar far side allowed to compare it with the near side and draw very important conclusions in the very beginning of planetary studies based on spacecrafts. ... Celestial bodies are dichotomic. ... The concept of celestial bodies includes Sun (a star) as one of them. ...

... Accelerating black holes, spin-2/3fields and C-metric . A TOPOLOGICAL EXTENSION OF GENERAL RELATIVITY TO EXPLORE THE NATURE OF QUANTUM SPACETIME, DARK ENERGY AND INFLATION . EFFECTIVE THEORY FOR QUANTUM GRAVITY . TESTS OF GENERAL RELATIVITY AND ALTERNATIVE THEORIES OF GRAVITY USING GRAVITATIONAL WAVE OBSERVATIONS . ... THE MASS OF THE OPPENHEIMER-SNYDER-BLACK HOLE: ONLY FINITE MASS QUASI-BLACK HOLES . ... NEUTRINO MASS AND THE STANDARD MODEL . Neutrino masses and flavor mixing . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2014 April 21 . Massive Nearby Spiral Galaxy NGC 2841 . ... A mere 46 million light-years distant, spiral galaxy NGC 2841 can be found in the northern constellation of Ursa Major . ... X-ray images suggest that resulting winds and stellar explosions create plumes of hot gas extending into a halo around NGC 2841 . ... About APOD | ...

The multiscale analysis of heterogeneous structures is actually an important and effective tool of mathematical modeling in physics, technique and biology. ... The special year will extend the existing cooperation between French and Russian researchers in the multiscale analysis and in mathematical modeling in hemodynamics, taking into consideration the mass transport, coagulation, fluid-structure interaction and other aspects. ...

... I note that "Z" plays an important role in what the ALFA surveys will look for: . ... low Z . nearby low mass . ... Arecibo . ... ADBS (Arecibo Dual Beam Survey): Rosenberg & Schneider 2002. ... A few sources with unobvious optical counterparts. ... Coverage wins for volume, but if you do a shallow survey you are sampling only the nearby volume at low masses. ... So need artificial test sources to find completeness. ... Total volume within survey in which source could have been detected. ...

The K20 survey. I. Disentangling old and dusty star-forming galaxies in the ERO population", 2002, Cimatti A. et al., ... Probing the evolution of massive galaxies with the K20 survey", 2002, Cimatti A., invited contribution in the ESO/USM Workshop "The Mass of Galaxies at Low and High Redshift", Venezia (Italy), October 24-26, 2001, in press. ... The K20 survey: new light on galaxy formation and evolution", 2003, Cimatti et al., ... Old galaxies in the young Universe", 2004, Cimatti et al., ...

... Hierarchy and stability 3. Stability criteria for triple systems 4. ... The results for selected systems with weak hierarchy (physical properties of components) System HD 40887 AB+CD HD 76644 AB+CD HD 217675 AB+CD HD 222326 A?+BC HD 284419 A+BC Spectral types K5V, M0V, K4V, ?? ... More accurate results for selected systems HD 217675/6 ( And) Quadruple system More accurate results for selected systems HD 217675/6 Pair B1B 2 More accurate results for selected systems HD 217675/6 (Zhuchkov et al. ...

Modelling Protostellar Disks Sarah Maddison Centre for Astrophysics and Supercomputing Swinburne University Overview · Types of circumstellar disks : ­ protostellar disks ­ circumbinary disks ­ protoplanetary disks · Modelling disk - important parameters: ­ Mdisk, Rdisk, H(r), i, T(r,z), (r,z)... ­ grain properties Introduction to PS Disks · Disks are a natural by- product of star formation process · Indirect evidence for ... Fuor and Xor outburst) convection in accretion disks? ...

... ARTICLE: Die Roche’sche Grenze . ... Beide Objekte besitzen eine derart groъe Masse, dass sie in der Hauptsache von ihrer eigenen Gravitationskraft zusammengehalten werden, wobei die Masse des Planeten die des Satelliten Эberwiegt. Sehen wir uns den Satelliten etwas nДher an. ... Dadurch enstehen an der OberflДche der zwei Objekte GezeitenkrДfte, d.h. die OberflДche des Satelliten krЭmmt sich in Richtung des Mittelpunktes des Mutterplaneten und umgekehrt (vgl. ... AAL member since 1996 . ...

... The one year crew. (image credit: NASA/Bill Stafford) . The тАЬOne Year CrewтАЭ has specific objectives to their mission all in a bid to find out if the human body and mind is capable of long missions to an asteroid, back to the Moon or even to Mars in the future. ... On-board the Russian space station Mir four cosmonauts clocked up more than a year in space in the 1980s and 1990s.€а (1942-) has the record for the longest single space flight of 437 days or 14 months in space in 1995. ...