... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. December 18, 1996 . A Sky Full Of Hydrogen . ... Explanation : Interstellar space is filled with extremely tenuous clouds of gas which are mostly Hydrogen. ... In this false color image no stars are visible , just diffuse clouds of gas tens to hundreds of light years across which cluster near the plane. ... About APOD > . ...

Astronomy Picture of the Day . A Sky Full Of Hydrogen . ... 18.12.1996 . ... Credit: J. Dickey ( UMn ), F. Lockman ( NRAO ), SkyView Explanation: Interstellar space is filled with extremely tenuous clouds of gas which are mostly Hydrogen. ... The proton and electron spin like tops but can have only two orientations; spin axes parallel or anti-parallel. ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: hydrogen . Publications with words: hydrogen . ...

... J. Brand, M. Felli, R. Cesaroni, C. Codella, G. Comoretto, S. Di Franco, F. Massi, L. Moscadelli, R. Nesti, L. Olmi, F. Palagi, F. Palla, D. Panella, R. Valdettaro . 2007, IAU Symposium 242, p. 223 . ... 2007, ApJ, in press . ... Murphy, G. C., Lery, T., O'Sullivan, S., Spicer, D., Bacciotti, F., Rosen, A. 2007, A , in press . ... Rubini, F., Lorusso, S., Del Zanna, L., Bacciotti, F. 2007, A , in press . ... Coffey, D., Bacciotti, F., Ray, T.P., Eisloeffel, J., Woitas, J. 2007, ApJ, in press . ...

... High-velocity clouds (HVCs) were discovered by Muller, Oort & Raimond (1963) in the 21-cm line emission of neutral, atomic hydrogen. They are gas clouds which are characterised by high radial velocities incompatible with a participation in the rotation of our Galaxy. ... This suggestion was seized by Braun & Burton (1999) who identified 66 compact high-velocity clouds (CHVCs) with positional and kinematic characteristics being compatible with a distribution across the entire Local Group. ...

... 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 . ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... Publications of the ASP (PASP) . Magazines . Mercury Magazine . ... Astronomy Beat . ... Mercury Magazine Contents and Select Excerpts . ... November/December 2005 . Mercury is a bi-monthly membership magazine. ... Remarks by the 2005 recipient of the ASP?s Catherine Wolfe Bruce Gold Medal for a lifetime of achievement in astronomy. ... Sky Events, Richard Talcott . November Sky Map | ...

... Archive for December 2009 . ... Posted by hlee . ... Category: Algorithms , arXiv , Cross-Cultural , Jargon , Methods , Quotes , Stat , Uncertainty | Comment . ... Category: arXiv , Astro , Stat | ... Comments RSS . ... 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 . ...

. Cold clouds of hydrogen gas, from which stars may one day coalesce, reveal themselves to radio eyes as shadows against relatively warmer, brighter clouds behind them. We are studying these interstellar silhouettes with data from the Canadian Galactic Plane Survey and VLA Galactic Plane Survey . NAIC : . Steven Gibson , . Calgary : . Jeroen Stil , Russ Taylor . DRAO : . Peter Dewdney , Lloyd Higgs . Exeter : . Chris Brunt . UBC : . Bill McCutcheon . Hamburg : . Heinz Wendker . Maintained by Steven Gibson

... Most Important Journals . Less Popular Astronomical Journals . Physics . Space, Selectial mechanics, .. Russian Journals . ... Astrophysics & Astronomy . ... Astronomical Journal . ... New Astronomy . ... Publications of the Astronomical Society of the Pacific . ... STScI News . Space Telescope Insitute Newsletter . ... Journal of Astronomical Data . ... Journal of High-Energy Physics (mirror in CERN ) [astro, grav, hi-energy .. ... Journal of Experimental and Theoretical Physics . ...

... Observatory . ... Science . ... Science Users Information > Science Publications > Science Announcements > Restricted Services from 21 December to 01 January . ... Science Users Information . Observing Facilities . ... Instrumentation Development . Future Facilities and Development . ... Observing with ESO Telescopes . ... Data Handling and Products . ... Science Data Products Forum . ... Science Archive Facility . ... ESO Data . ... ESO Data Access Policy . ... ESO Science Newsletter . ...

Using the data obtained with the Spitzer Space Telescope as part of the Surveying the Agents of a Galaxy's Evolution (SAGE) legacy survey, we have studied the variations of the dust composition and abundance across the Large Magellanic Cloud (LMC). ... Using a model and comparing with a reference spectral energy distribution from our Galaxy, we deduce the relative abundance variations of small dust grains across the LMC. ... ADS Citation Query . ... citations vs. year [year,citations] . ...

... Magnetic storms online . ... Geomagnetic activity forecast . ... December : 2015 . ... No magnetic storm is expected . From 2 December 2015 to 28 December 2015 the following magnetic storms and disturbances are expected: . December 06, 2015 geomagnetic disturbances . ... December 08, 2015 geomagnetic storm of level G1 (minor) . ... December 21, 2015 geomagnetic storm of level G2 (moderate) . ... December 16, 2015 geomagnetic storm of level G1 (minor) 2 December 2015 - 28 December 2015 . ...

... Armagh Planetarium . ... Universe . ... Posted on December 16, 2013 | ... Continue Reading.. ... If the count was to include all Earth satellites including broken parts and discarded pieces, [ ] . ... Posted on November 29, 2013 | ... 1 Comment November 9 is Carl Sagan Day when enthusiasts of astronomy and science remember and celebrate the life and works of Carl Sagan. ... Newer Entries . Hello, IтАЩm Colin, welcoming you to Astronotes, the PlanetariumтАЩs official blog. ...

... Shustov B.M., Wiebe D.S. Dust expelling from the Galaxy ( abstract from the journal ). Astronomy Reports , 1995, 39 , 578-586 [AZh, 72 , 650-659]. Wiebe D.S., Shematovich V.I., Shustov B.M. Chemical and dynamical evolution of protostellar clouds: initial stages of collapse ( abstract from the journal ). ... Shustov B.M., Wiebe D.S., Tutukov A.V. Evolution of disk galaxies and loss of heavy elements into the intracluster medium. ... ApJ (Letters), 1998, 503 , L71-L74 ( astro-ph/9806155 ). ...

This image, obtained during the late commissioning phase of the GeMS adaptive optics system, with the Gemini South AO Imager (GSAOI) on the night of December 28, 2012, reveals exquisite details in the outskirts of the Orion Nebula. ... In this image, the blue spots are clouds of gaseous iron "bullets" being propelled at supersonic speeds from a region of massive star formation outside, and below, this image's field of view. ... Credit: Gemini Observatory/AURA ...

... Main . ... April 2016 . ... December 2015 . November 2015 . October 2015 . September 2015 . August 2015 . July 2015 . June 2015 . May 2015 . April 2015 . March 2015 . February 2015 . January 2015 . December 2014 . November 2014 . October 2014 . September 2014 . August 2014 . July 2014 . June 2014 . May 2014 . April 2014 . March 2014 . ... December 2013 . ... April 2013 . ... December 2012 . ... April 2012 . ...

... CV & PUBLICATIONS | ... Nicholls, DC, Dopita, MA, Sutherland, RS, Jerjen, H, & Kewley, LJ " Metal-poor Dwarf Galaxies in the SIGRID Galaxy Sample. ... Nicholls DC, Jerjen, H, Dopita MA, & Basurah, H. (2014) " Nebular Metallicities in Two Isolated Local Void Dwarf Galaxies ", Astrophysical Journal 780, 88 * . ... Sweet SM, Drinkwater MJ, Meurer G, Bekki K, Dopita MA, Kilborn V, & Nicholls DC, " CHOIRS H I Galaxy Groups: The Metallicity of Dwarf Galaxies" , (2014) Astrophysical Journal , 782, 35 * . ...

... The Sun is the closest star to us, and a regular object in our Galaxy. Solar activity manifests itself, primarily, in solar flares - episodic explosive energy release in the form of electromagnetic radiation and high energy particles (electrons and protons). The nature of the flares is related to cyclic variations of global and local magnetic fields in the atmosphere of the Sun. ... Such formations are called active regions. ...

... Samara State Aerospace University Staff Efimova Ekaterina Andreevna . ... May 2015 - Co-organiser of Regional Student Contest 'Management' (Samara, Samara State Aerospace University); . ... December 2014 - Chair Organizing Committee, Inter-regional Student Contest "Change Management and Organizational Development in the Business" (Samara, Samara State Aerospace University); . April 2014 - Co-organiser of University Student Contest 'Management' (Samara, Samara State Aerospace University); . ...

NIST Special Publication 500-223 . A Framework for the Development and Assurance of High Integrity Software . ... The purpose of this document is to recommend a framework for the development and assurance of high integrity software. ... High integrity software, project management, software assurance, software configuration management, software development, software hazard analysis, software quality assurance, software verification and validation. ... 2 SOFTWARE DEVELOPMENT . ...