... Asperatus Clouds Over New Zealand . ... Although their cause is presently unknown, such unusual atmospheric structures, as menacing as they might seem, do not appear to be harbingers of meteorological doom. ... Coronal Rain on the Sun . ... Last week, for example, our very Moon passed in front of the planet Jupiter. ... At only 30 million light years distant and fully 60 thousand light years across, M51, also known as NGC 5194, is one of the brightest and most picturesque galaxies on the sky. ...

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... 2008 February 26 . Mysterious Acid Haze on Venus . ... Explanation: Why did an acidic haze spread across Venus? The unusual clouds were discovered last July by ESA 's robotic Venus Express spacecraft currently orbiting Venus . ... There, sunlight broke these molecules apart and some of them recombined into the volatile sulfuric acid . Over the course of just a few days last July, the smooth acidic clouds spread from the South Pole of Venus across half the planet. ... About APOD | ...

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• APOD: 2013 February 27 - Asperatus Clouds Over New Zealand
• APOD: 2014 February 23 - Cassini Spacecraft Crosses Saturns Ring Plane
• APOD: 2011 February 20 - Mammatus Clouds Over Olympic Valley

... Views of Martian Clouds . ... Although not as pronounced as on Earth , clouds are common features on Mars. The Martian atmosphere has only a trace of water vapor; however, the temperature and pressure is such that the atmosphere is usually close to saturation and produces clouds. Even from Earth based telescopes, clouds have been observed by transient brightening on the surface of Mars. ... Lee waves . ... Wave clouds . ... Image Credit: Calvin J. Hamilton) . Lee Wave . ... Wave Clouds . ...

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• APOD: 2000 February 28 - The Sombrero Galaxy from VLT
• APOD: February 9, 1999 - A Supernova Starfield
• Asteroid Mathilde

... Armagh Planetarium . ... Universe . ... Posted on April 2, 2014 | ... Continue Reading.. ... No Comments Astronomy is a science that knows no borders. ... 1 Comment Comets are frozen lumps of ice (often called volatiles) and rock that come from distant parts of our Solar System. ... Newer Entries . Hello, IтАЩm Colin, welcoming you to Astronotes, the PlanetariumтАЩs official blog. Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

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• Wonders of the February Night Sky | Astronotes
• Astronotes | Armagh Planetarium's astronomy news from across the Universe
• stellar nursery | Astronotes

... Bringing news from across the Universe to children all around the world . ... But when you look at space photograph, where there s no natural sense for how big objects should look, it is much more difficult to judge! ... It shows a cloud of dust and gas (shown in red) next to a bright star. ... These fake lines are called diffraction spikes . Although diffraction spikes add something to the photo that shouldn t really be there, many people like them and think that they look nice. ...

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• http://www.eso.org/public/news/eso1208/kids/
• http://www.eso.org/public/news/eso1307/kids/
• http://www.eso.org/public/news/eso1306/kids/

Weaving together Astronomy+Statistics+Computer Science+Engineering+Intrumentation, far beyond the growing borders . ... Archive for February 2009 . ... Posted by hlee . ... On the other hand, I?m also aware of challenges in astronomy that data (images) cannot be transformed freely and be fed into standard machine learning algorithms. ... Category: arXiv , Astro , Cross-Cultural , Data Processing , Imaging , Quotes | Comment . ... Therefore, semiparametric is not exactly [MADS] but almost [MADS]. ...

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• The AstroStat Slog 2011 February
• The AstroStat Slog 2007 February
• The AstroStat Slog 2010 February

... Solar System . ... Sun . ... Comets . ... Some get thrown out of the solar system forever, whereas others end up on yet smaller orbits, visiting the inner solar system fairly frequently - such as comet Halley. ... When a comet moves into the inner solar system, this is heated by the Sun, and the ices turn into gas which forms the head or coma of the comet, which may be hundreds of thousands of kilometres across and visible from Earth. The most striking part of many active comets is the tail . ...

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• Total Lunar Eclipse of 21 February 2008 | International Year of Astronomy in
• Armagh Astropark
• Armagh Observatory

.

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• U of O High Energy Physics Seminars
• Thermodynamics
• Astronomy HyperText Book

... Pluto's orbit is also highly inclined -- tilted 17 degrees to the orbital plane of the other planets. ... Ground-based observations indicate that Pluto's surface is covered with methane ice and that there is a thin atmosphere that might freeze and fall to the surface as the planet moves away from the Sun. ... This is the first image-based surface map of the solar system's most remote planet, Pluto. ... This is the first surface map of Charon, the moon of the solar system's most remote planet, Pluto....

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• Trigonometry--what it is good for?
• Magnetometers [Oulu]
• Campaign 2, February 2000 (continue)

Many intermediate-age star clusters in the Magellanic Clouds exhibit very unusual features in their colour-magnitude diagrams that suggest they may have formed their stars over periods spanning hundreds of millions of years per cluster. ... Nonetheless, this interpretation is enticing in the context of the formation of ancient globular clusters, which almost always exhibit puzzling abundance patterns that apparently require multiple episodes of star formation to explain. ...

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• http://www.mso.anu.edu.au/seminars/abstracts/20150212-1100.html
• http://www.mso.anu.edu.au/seminars/abstracts/20150213-1400.html
• Worked Example 01

There is often dust associated with ionized regions. Compact HII regions usually have associated dust from a molecular cloud in which the massive star is being "born". ... For such stars the dust is not produced by the star, and a variety of dust features are observed. The planetary nebulae also usually have associated dust from the previous stage of evolution where they were either carbon stars or M-type giants. ... The feature near 11.5 microns in the IC 418 spectrum may be due to SiC dust. ...

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• Spatial Variations of Dust Abundances Across the Large Magellanic Cloud
• Unusually bright 12CO(3-2) condensations in the tidally perturbed Small
• Dust Around Stars

... Sun images . ... February : 2016 . ... Image of Sun's photosphere obtained 09.02.2016 at 23:40 UT with HMI instrument on board SDO spacecraft . ... Image of Sun's magnetic field obtained 09.02.2016 at 23:52 UT with HMI instrument on board SDO spacecraft . ... Image of Sun's transition region obtained 09.02.2016 at 23:39 UT with AIA instrument on board SDO spacecraft . Image of Sun's corona . Image of Sun's corona obtained 09.02.2016 at 23:39 UT with AIA instrument on board SDO spacecraft . ...

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• Latest images of the Sun February 10, 2016
• Latest images of the Sun February 11, 2016
• Latest images of the Sun February 10, 2014

. Russian Version [ MS-Win ] . [ News ] . [ Satellite data ] . [ SMIS ] . [ ] . Cities . Rivers . Fires . Clouds . Sea and lakes . Miscellaneous . Back to SMIS Home Page .

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MSU-SK data examples. ... Fire in Moscow Rigion . June-Jule 1999 . A fire at Turkey's biggest oil refinery (Izmit city) . ... 19 August 1999 . Volgograd Region . 16 March 1999 . Moscow Region . Water vapour from Moscow heating stations, . 3 February 1999 . Arkhangelsk Region . Fire in August 1997 . Astrakhan Region . 23/04/1996 . Volgograd . example 1 . ... 1997-2002 SMIS IKI RAN and SRC "PLANETA" Moscow, Russia. ...

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... OOF . ... OOF Index . ... OOF software . ... Fits up to fifth order . ... These are experimental data currently being analysed, not final documentation of research. ... Only fitting for Zernike orders up to and including 3rd to concentrate on finding possible off-axis aberrations. ... The results below show that when fitting for all Zernikes up to and including fifth order, the output maps vary greatly between pixels. As above, but fitting up to fifth order Zernike polynomial. ...

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• Example of an OOF analysis for the GBT Bojan Nikolic web pages (r. 329)
• Retrieval of surface from data across the MUSTANG field (Part 2)
• Astrophysics Group OIFITS: A Data Exchange Standard for Optical (Visible/IR)

... The IB_TAIL magnetic conjugations with the others Spacecraft . ... ASCII file description | Plot description | ... ASCII file | real time plot . ... The IB_TAIL magnetic conjugations with the groundbased magnetic observatories . ... The IB_TAIL magnetic mapping polar diagram, and ASCII files for each decade of month: . ... ASCII files description | DEC 1 (ASCII file, size more then 350Kb!) ... Back to the IB_TAIL Home page. ... INTERBALL mission  ...

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• Campaign 2, February 1998 (continue)
• Campaign 2, February 1998
• Events on January 10-11, 1997 - INTERBALL observations

Jean-Bernard ZUBER (LPTHE, Paris-6 Jussieu): Matrix integrals and knot theory . Physicists have developed diagrammatic techniques, known as Feynman graphs, to deal with integrals with Gaussian weights. When applied to integrals over Hermitian matrices, this also allows to control the topology of the graphs, and to write for example generating functions of the numbers of planar objects. This will be illustrated on the counting of "alternating" links and tangles.

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• Laminations and group actions in€аdynamics
• Conference "Combinatorial Methods in Physics and Knot Theory" (Moscow, February

ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Information & tools for observers . ... Australia Telescope Online Archive (ATOA) . ... ATCA | ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... The Australia Telescope National Facility Colloquium . ...

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• Research - Compact high-velocity clouds around the Milky Way
• Technical Issues and Challenges
• WCSLIB: Example code, testing and verification

... emchain takes some time to run. ... Here are a few examples of how to use it. ... Standard run (get calibrated event files from an ODF located in your_odf_dir), sending the output to a log file: emchain odf=your_odf_dir > emchain.log 2> emchain.err (sh shell) emchain odf=your_odf_dir > emchain.log >& emchain.err (csh shell) . Same, but getting the bad pixels from the CCF instead of the data and applying attitude and HK GTIs: emchain odf=your_odf_dir badpixfindalgo=NO filteratt=Y filterhk=Y . ...

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• Home Page
• Practical examples and hints

. New Horizons took this image of the icy moon Europa rising above Jupiter's cloud tops with its Long Range Reconnaissance Imager February 28, 2007. The spacecraft was 1.4 million miles (2.3 million kilometers) from Jupiter and 1.8 million miles (3 million km) from Europa when it captured the image. NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

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• NASA's Cassini spacecraft observes meteoroids colliding with Saturn's rings |
• February 2006 | Astronomy.com
• Spacecraft detects aurora and mysterious dust cloud around Mars | Astronomy.com