Discover the cosmos! ... 2012 July 24 . South Polar Vortex Discovered on Titan . Image Credit: Cassini Imaging Team , ISS , JPL , ESA , NASA . Explanation: What's happening over the south pole of Titan? A vortex of haze appears to be forming, although no one is sure why. ... Winter, however, is slowly descending on the south of Titan, so that the vortex , if it survives, will be plunged into darkness over the next few years. ... About APOD | ... A service of: ASD at NASA / GSFC . ...

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• APOD: 2008 October 27 - Beneath the South Pole of Saturn
• APOD: 2009 October 13 - Giant Dust Ring Discovered Around Saturn
• APOD: 2007 April 3 - A Mysterious Hexagonal Cloud System on Saturn

... Астронет | ... South Polar Vortex Discovered on Titan . ... Credit Copyright: Cassini Imaging Team , ISS , JPL , ESA , NASA Explanation: What's happening over the south pole of Titan? ... Winter, however, is slowly descending on the south of Titan, so that the vortex , if it survives, will be plunged into darkness over the next few years. ... Публикации с ключевыми словами: Titan - clouds - Титан - Сатурн - ураган . Публикации со словами: Titan - clouds - Титан - Сатурн - ураган . ...

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• XWare > APOD
• Giant Dust Ring Discovered Around Saturn
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Titan . ... Hubble Space Telescope Images of Titan's surface . ... Later that year, it will release the European-built Huygens probe for a descent through Titan's atmosphere. ... This artist's rendering shows the European Space Agency's Huygens probe descending into the atmosphere of Saturn's moon Titan after being released by NASA's Cassini spacecraft. ... This artist's rendering shows the Huygens probe on the surface of Saturn's moon Titan after being released by NASA's Cassini spacecraft. ...

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• Saturn's Moon Janus
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• Astronomy Picture of the Day

... 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. ...

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... 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. ...

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• Website of Tobias Westmeier
• Research - The high-velocity clouds of M31
• ATNF Colloquium

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 . ...

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• Dusty HII Regions and Planetary Nebulae
• Research Interests
• Discovery and Analysis of 21 Ўўm Feature Sources in the Magellanic Clouds

... Circumstellar disc of beta Pictoris: constraints on grain properties from polarization. To appear in the Astronomy & Astrophysics . abs , src , ps ] . ... Dust influx to Titan from Hyperion . ... abs ] . ... Characteristics of bulges and disks in interacting galaxies . ... Dust grains around Herbig Ae/Be stars: porous, cometary-like grains? ... To appear in the Astronomy & Astrophysics Supplement . ... Finally, Links may lead you to more options (e.g. via the LANL preprint system). ...

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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 . ...

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• Astronomy Plus CCD Images of Galaxies

... 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 ...

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• Arecibo Radar Discovers Triple Near-Earth Asteroid
• Magellanic Stream
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A team of U.S. and German astrophysicists have made the first ever detection of X-rays coming from a comet. ... Following the initial detection, the team reported repeated X-ray emissions from the comet over the next 24 hours. ... One preliminary theory is that X-ray emission from the Sun was absorbed by a cloud of gaseous water molecules surrounding the nucleus of the comet, and then were re-emitted by the molecules in a process physicists call "fluorescence." ... Comets . ...

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• Titan Press Release
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• Astronomical Names

home publications > mercury . ... Astronomy Beat . ... Nearly four centuries ago, Galileo's simple observations of Earth's planetary sibling, Venus, buoyed the proponents of a Copernican universe. ... The Italian astronomer had settled into a new house in Florence and had begun to observe Venus, which in November 1610 would have appeared as an evening star, bright in the western sky after dusk. ... From these two observations, Galileo inferred that Venus must orbit closer to the Sun than does Earth. ...

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• ASP: Accidental Astrophysics: The Devil's In the Magnitudes, Part II
• ASP: Is God a Mathematician?
• ASP: Contents, January/February 2000

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Asteroid 2010 SO16 and the Earth follow similar orbits around . the Sun. ... out a horseshoe shape in space, taking 175 years to go from . ... Asteroid 2010 SO16 takes 175 years to make the trip from one end of the horseshoe to the other. ... Currently, three other horseshoe companions of the Earth are known to exist but, unlike 2010 SO16, these linger for a few thousand years at most before moving on to different orbits. ...

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• Extrasolar Planetary Systems: More Like Ours - by David Perez-Suarez, Armagh
• Terry Mosely's Bulletins

... An artificial comet holds secrets to Earths life . ... Astronomers recently discovered that Scholz's star passed close to the Sun 70,000 years ago. Wouldn't its gravity have sent Oort Cloud comets raining into the inner planets? ... COMETS | OORT CLOUD . Based on the number of long-period comets that enter the inner solar system, astronomers estimate there are probably trillions of them in the Oort Cloud. Get instant access to subscriber content on Astronomy.com! ... Discover | ...

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• Is there evidence of Oort-Cloud-like structures around other stars? |
• Proxima Centauri is a red dwarf star, so would it appear red from the surface
• Why do some stars appear to flash a variety of different colors when you look

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Solar System . ... Planets . ... Space Flight . ... Neptune, which is not visible with the naked eye, was discovered by mathematical prediction in 1846 before being observed through a telescope. ... Tidal interactions between Neptune and Triton mean that in 100 million years these two bodies may come too close to one another causing Triton to be torn apart leaving Neptune with a ring system more spectacular than SaturnтАЩs. ...

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• Images of the Month: The Beauty of Pinhole Photography | Astronotes
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• Exploring Icy Moons in Search of Life | Astronotes

... 2011: . Detection of galaxies with large peculiar velocities . ... New galaxies with polar rings . ... The new catalog contains 275 galaxies. ... Radio galaxy RC J0311+0507, a unique object of the early Universe . ... The estimation of the stellar population age in the host galaxy via the multicolor photometry (BTA) and new infrared data (UKIRT, 2011), amounting to 0.8 Gyr results in the moment of its formation when the universe was about 0.5 milliard years old (z~10). ... Archive . ...

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• Solar system sector, archive 2010
• Galaxy sector, archive 1997
• Galaxy sector, archive 1995

... A rough estimation is that in the United States there is one planetarium per 100,000 population, ranging in size from the Hayden Planetarium's 20-meter dome seating 430 people, to three-meter inflatable portable domes where children sit on the floor. ... Together dblo associates make a huge impact in the architecture, interior design and development arena in London. ... With the holidays around the corner what better way to spoil your family than with your very own private home cinema. ...

17. Rivi: Be Stars

18. Supernova 2009js in NGC 918

19. A Brief History of Magnetospheric Physics Before the Spaceflight Era

20. C/2006 P1 (McNaught)