... 2010 November 29 . Dark Belt Reappearing on Jupiter . Credit: NASA's JPL , U. Oxford , UC Berkeley , Gemini Obs. ... Explanation: Why are planet-circling clouds disappearing and reappearing on Jupiter? ... Earlier this year, unexpectedly, Jupiter's dark Southern Equatorial Belt (SEB) disappeared. ... Detailed professional observations revealed that high-flying light-colored ammonia -based clouds formed over the planet-circling dark belt. ... About APOD | ... A service of: ASD at NASA / GSFC . ...

APOD is 20 Years Old Today . ... Credit Copyright: Apologies to: Vermeer's Astronomer and Geographer ; Image Pixelation: Rob Stevenson Explanation: Welcome to the vicennial year of the Astronomy Picture of the Day! ... As during each of the 20 years of selecting images, writing text, and editing the APOD web pages, the occasionally industrious Robert Nemiroff (left) and frequently persistent Jerry Bonnell (right) are pictured above plotting to highlight yet another unsuspecting image of our cosmos. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. ... The Orion Nebula from VLT . ... But this image , a representative-color composite of 81 near- infrared light images taken with VLT's ISAAC , shows the Orion Nebula to be a busy neighborhood of young stars, hot gas, and dark dust. ... The eerie blue glow surrounding the bright stars pictured here is their own starlight reflected by nearby dust . ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Astronomy for Kids . ... Can you explain Mercury's retrograde motion? Do other planets appear to do this also? ... When astronomers talk about retrograde motion, generally they refer to the apparent motion outer planets make as Earth passes them while orbiting the Sun. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... In 1995, two intermittent detector features (aka hotspots) particular to the ROSAT HRI have been noticed on the edge of the HRI field. ... To view the hotspots: . HS #1 > xdisplay "rh123456n00.qp[key=(rawx,rawy)][186:697,230:741]" HS #2 > xdisplay "rh123456n00.qp[key=(rawx,rawy)][3380:3891,297:808]" HS #3 > xdisplay "rh123456n00.qp[key=(rawx,rawy)][2753:3252,3065:3564]" OR > xexamine rh...qp[key=(rawx,rawy)] [HS #1, if present, appears as a spot in the lower left; HS #2 in the lower right.] ...

... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...

In early mid-infrared observations (c 1970) two prominent dust emission features were discovered. ... Soon after the discovery of the silicate features another feature at about 11.3 microns was discovered in the spectra of some carbon stars, not as wide or as strong as the silicate features but still thought to be due to a solid material. ... less common features: extreme carbon stars, the AlO/silicate complex, the "unidentified infrared" features, unusual silicate features . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Moon . Planets . ... Monthly Sky Notes . ... February . ... The ringed planet will be quite bright, but unlike Jupiter it will not be the brightest point of light in the sky, this accolade will return to Sirius which is the brightest star in our night sky in the constellation of Canis Major. ... Seven days later on February 18, the Moon will be in its full Moon phase. ... Tweets that mention Wonders of the February Night Sky | ... Astronotes . ...

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

Geoffrey and Margaret Burbidge at Armagh Observatory . On Monday, 28th July, the renowned astronomer Dr Margaret Burbidge visited the Armagh Observatory and delivered an excellent lecture on Quasars , those mysterious star-like objects scattered between the galaxies that appear to be moving away from us at enormous speeds. Margaret , a sprightly eighty-four year old grandmother, was accompanied by her husband Geoffrey , their daughter, Sarah, and grandson, Conor. ...

... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... ESO . ... Survey Telescopes . ... ESO Supernova . ... Star Clusters . ... Stars@ESO . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... ESO 1-metre Schmidt telescope . ... Future Projects . ... This NASA/ESA Hubble Space Telescope image shows the positions of the past, present and predicted future appearances of the Refsdal supernova behind the galaxy cluster€а MACS J1149+2223 . ...

... This artist's concept shows a lump of material in a swirling, planet- . ... Astronomers have witnessed odd behavior around a young star. Something, perhaps another star or a planet, appears to be pushing a clump of planet-forming material around. ... Spitzer observed infrared light coming from one such disk around a young star, called LRLL 31, over a period of five months. ... could be shoving planet-forming material together, causing its thickness to vary as it spins around the star. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Astrophysics graduate student programs . ... Facilities . ATNF facilities . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

... Laboratory and theoretical modelling of the UV bump on the interstellar extinction curve is a very popular topic in dusty investigations. ... feature is illustrated by Fig. 10 where the profiles were calculated using the model of graphite spheres. Figure 10: Normalized extinction efficiencies for graphite spheres. ... The lower panel shows the summary extinction of two graphite spheres with radii and (from upper panel) taken in equal proportions. ...

... A new IRAF task has been developed that automatically identifies linear (line-like) features in an image or set of images. ... In order to automatically detect linear features, the first step is to select pixels in the image (Fig. 1 , left panel) that fall within a given data value range. ... Another aspect of extended linear features is that the image space pixels that describe them are in some way adjacent to one another and have a minimum and maximum length. ...

To continue a command onto another line enter a ' \\ ' (backspace) character and then press <Return> . You can then continue entering the command. For example: rcp ubik:/home/roger/recipe.ps .; Return> lpr -Pps3 #6m recipe.ps . This copies the file recipe.ps from the home directory of the user roger on the remote host ubik to the users current directory. ... If you are using the Bourne, BASH or Korn shell a > character appears as a prompt at the start of the second command line. ...

. Fig. The SOHO/EIT 171 image (a) illustrating a pronounced transequatorial inverted V-shaped chain 1-2-3-4 which appears to outline the large soft X-ray CH observed with the Yohkoh/SXT (b) on March 1-2, 1999. The BBSO H-alpha (c) and MLSO/HAO He I 10830 (d) heliograms are shown to demonstrate relation of this and some other EUV chains to other large-scale structures such as H-alpha filaments and He I 10830 features. Back to paper .

... self-absorption - the absorption of light shining on an object by a process similar to that which produced the light originally; if a cloud emits less light than it absorbs from other clouds behind it, this net loss of light, termed self-absorption , causes the foreground cloud to appear darker than the background field (the term is from spectroscopy, where small absorption dips sometimes occur in larger emission lines, making the latter look as if it is absorbing part of itself) . ... HISA Main ...