So It Ends for Comet ISON - Comets Well, don't say we didn't warn you. As we hoped all along wouldn't happen, Comet ISON turned into a dud not a dazzle — a speck not a spectacle — a complete, unmitigated flop in terms of any kind of visual display for the world in the December dawn sky. But it sure was exciting while it lasted, and never more so than on November 27th and 28th as it approached and then passed through perihelion while spacecraft watched. To recap: Comet ISON thwarted predictions at every turn. Then, as it disappeared down into the glare of sunrise for viewers on Earth, spacecraft took over. At perihelion, less than one solar diameter from the Sun's surface, the extreme-ultraviolet cameras on the Solar Dynamics Observatory — the only craft able to look so close to the Sun — saw nothing whatsoever. Scientists glumly pronounced near-obituaries on a live NASA webcast. Then out the other side came a headless dust-and-rubble stream. Oh well. Let's hope for better luck next time. P.
24 heures en images : le meilleur de 2012 Actualité > Photo > Galeries Photos > 24 heures en images : le meilleur de 2012 24 heures en images : le meilleur de 2012 24 heures en images : le meilleur de 2012 Toute l'année, le diaporama "24 heures en images" compile les photos insolites en provenance du monde entier. 2012 touchant à sa fin, l'heure est à la sélection des meilleurs clichés. Ci-dessus, un grand requin blanc se saisissant d'un phoque, au large du Cap, en Afrique du Sud. - Par Cyril Bonnet PHOTOS. PHOTOS. PHOTOS. PHOTOS. Toute l'année, le diaporama "24 heures en images" compile les photos insolites en provenance du monde entier. 2012 touchant à sa fin, l'heure est à la sélection des meilleurs clichés. Envie de nager ? Un combat épique s'est engagé début décembre entre cet aigle et ce groupe de grues à Akan, au Japon, avec pour enjeu de la nourriture trouvée peu avant par les grands oiseaux. Cet anaconda – long de huit mètres selon Sipa – a été immortalisé le 9 novembre dans le Mato Grosso do Sul, au Brésil. Le landau ?
Galaxy nomenclature Galaxies contain varying numbers of planets, star systems, star clusters and types of interstellar clouds. In between these objects is a sparse interstellar medium of gas, dust, and cosmic rays. Supermassive black holes reside at the center of most galaxies. They are thought to be the primary driver of active galactic nuclei found at the core of some galaxies. Galaxies have been historically categorized according to their apparent shape, usually referred to as their visual morphology. Etymology The word galaxy derives from the Greek term for our own galaxy, galaxias (γαλαξίας, "milky one"), or kyklos ("circle") galaktikos ("milky") for its appearance as a lighter colored band in the sky. In the astronomical literature, the capitalized word 'Galaxy' is used to refer to our galaxy, the Milky Way, to distinguish it from the billions of other galaxies. "See yonder, lo, the Galaxyë Which men clepeth the Milky Wey, For hit is whyt." Nomenclature Observation history
Chunks of Ice May Have Broken Off Comet ISON Although Comet ISON appears to be holding its own against the increasing solar heat as it continues its risky game of “chicken” with the sun, the large mass of ice isn’t getting away unscathed — new observations show evidence for one or more large icy chunks breaking away from ISON’s nucleus. Comet ISON: 5 Things You Should Know Earlier this month, the potential “Comet of the Century” underwent a rapid brightening event, likely caused large fissures of ice suddenly sublimating and blasting gas into space. The resulting increase of gas contained within the comet’s coma and tail reflected more light from the sun, causing it to brighten and become a naked-eye object. On Nov. 28, ISON will arrive at its closest point, just 1.2 million miles (1.9 million kilometers) from the sun’s photosphere deep within the multimillion degree corona (the sun’s atmosphere). PHOTOS: Space Observatories Zero-In On Comet ISON GUIDE: Comet ISON: An Observer’s Guide
Jodrell Bank - The Night Sky Highlights of the Month April - Mars at Opposition. Image NASA. Mars, lying above Spica in Virgo, reaches opposition on April 8th when its magnitude will be -1.5 and its angular diameter 15.1 arc seconds. April - it is still worthwhile to view Jupiter. Jupiter imaged by Damian Peach Jupiter is now well past opposition but this is a still a good month to observe this giant of planets. The features seen in the Jovian atmosphere have been changing quite significantly over the last few years - for a while the South Equatorial Belt vanished completely (as seen in Damian's image) but has now returned to its normal wide state. See more of Damian Peach's images: Damian Peaches Website" Features in Jupiter's atmosphere - December 2013. April: Look for the Great Red Spot on Jupiter Observe the Great Red Spot Image: NASA This list gives some of the best evening times (in UT) during April to observe the Great Red Spot which should then lie on the central meridian of the planet. 1st 22:44 23rd 21:01 The Moon
2011 International Photography Award Winners Advertising: Fashion, 2nd Place Winner John Wright If you love photography contests like we do, then you'll want to check out The International Photography Awards. The annual competition was created to salute the achievements of the world's finest photographers, to discover new and emerging talent, and to promote the appreciation of photography. Recently, the category winners were announced. To view all the winners, you can go to this page on the IPA website or you can check out 25 of our very favorites, below. Advertising: Fashion, 1st Place Winner Peter Lipmann Advertising: Music, 2nd Place Winner Poras Chaudhary Advertising: Other Ad, 1st Place Winner Adam Taylor Advertising: Product, 3rd Place Winner Adam Balcerek Architecture: Other, 2nd Place Winner Kacper Kowalski Book: Nature, 1st Place Winner Thorsten Milse Book: Nature, 2nd Place Winner Alex Bernasconi Editorial: Photo Essay and Feature Story, 2nd Place Winner Zhe Chen Editorial: War/Conflict, 3rd Place Winner Jorge Dirkx
List of Messier objects The Messier objects are a set of astronomical objects catalogued by the French astronomer Charles Messier in his "Catalogue des Nébuleuses et des Amas d'Étoiles" ("Catalogue of Nebulae and Star Clusters"), originally published in 1771, with the last addition (based on Messier's observations) made in 1966. Because Messier was interested in finding only comets, he created a list of non-comet objects that frustrated his hunt for them. The compilation of this list, in collaboration with his assistant Pierre Méchain, is known as the Messier catalogue. This catalogue of objects is one of the most famous lists of astronomical objects, and many Messier objects are still referenced by their Messier number. The first edition included 45 objects, with Messier's final list totaling 103 objects. Messier objects Open cluster Globular cluster Nebula Planetary nebula Supernova remnant Galaxy Other Star chart of Messier objects Messier Star Chart. See also References
CFBDSIR2149-0403: a 4–7 Jupiter-mass free-floating planet in the young moving group AB Doradus? | A&A CFBDSIR2149-0403: a 4–7 Jupiter-mass free-floating planet in the young moving group AB Doradus?⋆ P. Delorme1, J. Gagné2, L. 1 UJF-Grenoble 1/CNRS-INSU, Institut de Planétologie et d’Astrophysique de Grenoble (IPAG) UMR 5274, 38041 Grenoble, France e-mail: Philippe.Delorme@obs.ujf-grenoble.fr 2 Département de physique and Observatoire du Mont Mégantic, Université de Montréal, CP 6128, Succursale Centre-Ville, QC H3C 3J7 Montréal, Canada 3 Université de Franche Comté, Institut UTINAM CNRS 6213, Observatoire des Sciences de l’Univers THETA de Franche-Comté, Observatoire de Besançon, BP 1615, 25010 Besançon Cedex, France 4 CRAL, UMR 5574 CNRS, École Normale Supérieure, 69364 Lyon Cedex 07, France Received: 11 July 2012Accepted: 25 September 2012 Abstract Using the CFBDSIR wide field survey for brown dwarfs, we identified CFBDSIRJ214947.2-040308.9, a late T dwarf with an atypically red J − KS colour. Based on observations obtained with SOFI on the NTT at ESO-La Silla (run 086.C-0655(A)). 1.
The Nine Planets Solar System Tour Lucie Awards 2012