Astronotes Armagh Planetarium's Stellar Blog! ... Monthly Sky Notes . ... Posted on May 20, 2011 | No Comments In our latest night sky guide we look at the stars of late spring and early summer and ponder just what does the brightness of a star really mean. ... Continue Reading.. ... No Comments What can you see in the March 2011 night sky? ... 2 Comments The long dark nights continue through February, but this does give us a chance to see some interesting objects in our night sky. ...

... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Bright planets meet at dusk . ... Astronomy magazine subscribers can read the full article for free. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

... November 21, 1997 . Jupiter: Moon, Ring, and Clouds . Credit: R. Beebe ( NMSU ), NASA . Explanation: An inner moon, an edge-on, planet-girdling ring, and high altitude cloud bands are visible in this mosaic of infrared images of gas giant Jupiter . ... Recorded on September 17th by the NICMOS instrument on board the Hubble Space Telescope, these pictures also emphasize atmospheric features high above the main jovian cloud deck . ... About APOD > . ... NASA Technical Rep.: ...

... Observers in Europe observed a sharp peak in the number of meteors visible around 0210 UTC during the early morning hours of November 18. ... Early morning risers around the world have enjoyed the sight of bright planets in this week's predawn skies - further enhanced by the celestial spectacle of the waning crescent Moon. From some locations the Moon was seen to pass in front of Jupiter or Venus, a lunar occultation. ... What are those bright objects in the morning sky? ...

According to calculations by Dr David Asher of the Armagh Observatory and Robert McNaught of the Anglo-Australian Observatory, a Leonid meteor storm is expected to be visible this year from Northern Ireland, with a peak during the early hours of 19th November. ... Dust grains emitted by comet Tempel-Tuttle as it swings past the Sun once every 33 years produce the Leonid meteors. ... Leonid dust trails in 2002 . ... McNaught/Asher estimates for years 2000 to 2006 . ... Armagh Observatory Leonid Pages . ...

MAIN PAGE . ... Nova Cygni August 1975! ... 1975/76: Comet West! ... Dr. Richard West (4th from left) & AAL members visiting SES Betzdorf on occasion of our club's 25th anniversary - October 1996 . Comet West Information . ... It was the brightest comet visible from Earth since Comet West in 1976. ... 1997: Comet Hale-Bopp! ... Thus Comet Hale-Bopp never got closer to Earth than Earth gets to the Sun. ... Comet Hale-Bopp JPL Page . ... 1999: Total solar eclipse over Luxembourg! ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2000 November 8 . October Skylights . ... Explanation: With brilliant Venus above the western horizon at sunset and Jupiter and Saturn high in the east by early evening, November's night sky is filled with bright planets. October's sky featured bright planets as well and, triggered by the active Sun, some lovely auroral displays . ...

... The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is a conspicuous object in the night sky with a prominent place in ancient mythology . ... The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years ) away. ... Data for these stars are listed in a table below. ... Yes . ... WEBDA Pleiades cluster data . ... M45: The Pleiades Star Cluster (2007 November 18) ...

Finding Himalia, The Fifth Brightest Moon Of Jupiter . Articles | ... Himalia is the only moon other than the Galilean moons of Jupiter that is visible in an amateur size telescope. ... I normally use “The Sky” from Software Bisque for planning my observing sessions and in helping me find objects, but it only has the Galilean moons for Jupiter so I used Red Shift (version 3 at the time) which I also had on my computer. ... www.astronomy.net . ... dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

... Impact craters and associated concentric rings are about the only features to be found on Callisto. ... It has a bright central region that is 600 kilometers in diameter, and its rings extend to 3000 kilometers in diameter. ... This image shows the heavily cratered surface of Callisto. ... Also visible is a fresh, sharp-rimmed crater some 90 km (56 miles) across named Igaluk (center left third of picture), and a bright zone in the south polar area (bottom of image) which could be an impact scar. ...

... Abstract . ... Galaxy-Scale Strong Lenses from the CFHTLS survey . ... The Host Environments of Type Ia Supernovae in the SDSS Survey . ... Galaxy evolution in the early Universe is a discipline of astronomy that has been transformed by observations with the Hubble Space Telescope. ... HST WFC3 observations of the comet scar on Jupiter . ... Further observations were obtained in the following weeks to track the evolution of the feature, as Jovian winds disperse the detritus through the atmosphere. ...

Bright Supernova - Archives On these pages you will find references to Supernovae which have faded into oblivion. ... Finally, in 1999, when I took over the International Supernova Network's Latest Supernovae page I retitled the main page "Latest Supernovae", BUT, it's the "Latest Supernovae" page of the "Bright Supernovae" pages which are also sub-pages of ISN. ... Brightest supernova in 2005 . ... Brightest supernova in 2002 . ... Brightest supernova in 2000 . ... Brightest supernova in 1999 . ...

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Slacker Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Life Under the Moon . ... Seeing Jupiter's Moons . ... Time Zones and the Spherical Earth . A Companion to the Earth? ... December 19, 1999) . ... Big Moon, Little Moon . ... How Big is the Moon? ... 14, 2000) . ... 2008 Phil Plait. ... Subscribe to the Bad Astronomy Newsletter! Talk about Bad Astronomy on the BA Bulletin Board! ...

... It's a Meteor Shower Smaller than grains of sand, meteors vaporize in a bright streak of light as they hit Earth's atmosphere. Meteor showers come from comets, but the sporadic meteors on other nights are mostly asteroid bits. ... Meteor Showers Come From Comets Jupiter Earth Sun Comet Mercury Tips: A bright Moon can wash out meteors, making them hard to see. ... But the comet bits hit Earth's atmosphere so fast, the pieces vaporize in bright streaks -- making a meteor shower! ...

Check out the new images (Jan 18-25) and (Jan 26-Feb 05) of the comet by Rob McNaught. ... Every few years a comet becomes bright enough to be easily seen with the naked eye but only every decade or so are these comparable with comets like Halley. ... Before Jan 13, the comet is not visible in the Australian sky after sunset. ... SOHO images . ... On Jan 12 at approximately 09:00 UT (8pm NSW time), comet C/2006 P1 McNaught appears at the 11 o'clock position in the images. ... STEREO images . ...

Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 12 - 18.11.2012, Forecast on 19 - 26.11.2012, Carrington Rotations 2130 (04,86.11.2012) SUNSPOT-FORMING ACTIVITY OF THE SUN WAS REMAINED ON THE AVERAGE LEVEL. ... FLARE ACTIVITY WAS AT THE HIGH LEVEL ON NOVEMBER 13, THE AVERAGE LEVEL ON NOVEMBER 12 AND 14 AND THE LOW LEVEL - 15 - 18.11. BY DATA SOHO AND STEREO CORONOGRAPHS WAS OBSERVED BY 49 CME ONE OF WHICH WAS THE "PAR- TIAL ГАЛО III" TYPE AND 3 - THE "PARTIAL ГАЛО II". ...

The X International Astronomy Olympiad has been held in Beijing (China) on October 25 - November 2, 2005. ... China Beijing . ... Like at VII and VIII IAOs the host team (team of Beijing city) took part in the Olympiad as the 16 th team. ... The 10 th International Astronomy Olympiad has been held successfully in Beijing on October 25 - November 2, 2005. ... J.Zhu (Beijing, X IAO-2005 LOC Chairman), . ... Dr. Michael G. Gavrilov, Founding Chairman of the International Astronomy Olympiad, . ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... les plus belles images de l'Univers d†йcrypt†йes pour vous . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Les ast†йro†пdes percutent Jupiter plus souvent que pr†йvu . ... Sur Terre, une collision avec un ast†йro†пde d'environ 10m de diam†иtre a lieu en moyenne une fois tous les dix ans. ... Etat du ciel . ...