... But when a bright comet passed in front of a bright star cluster last month, binoculars and cameras were able to show off their marked differences in dramatic fashion. Elliptical Galaxy M87 . ... Usually it is the Earth's Moon that eclipses the Sun. Last week, for the first time in over 100 years, the planet Venus took a turn. ... Enjoying the 2004 Transit of Venus from Stuttgart, Germany, astronomer Stefan Seip recorded this fascinating, detailed image of the Sun. ... Venus at the Edge . ...

... 2010 October 26 . Comet Hartley Passes a Double Star Cluster . ... Explanation: Most star clusters are singularly impressive. ... Also known as "h and chi Persei", this unusual double cluster , shown above, is bright enough to be seen from a dark location without even binoculars . ... Captured earlier this month, the bright comet 103P/Hartley , informally called Comet Hartley 2, passed well in front but only a few degrees away from the famous double cluster. ... About APOD | ...

... November 12, 1996 . Comet Hale-Bopp Passes M14 . ... Explanation : Comet Hale-Bopp continues its slow trek across the night sky, and can now be seen superposed near the bright globular cluster M14 . Will Comet Hale-Bopp become as bright in early 1997 as Comet Hyakutake did in early 1996? It is still too early to tell. ... Because of the size of coma , some speculate that the nucleus of Hale-Bopp is unusually large. ... Tomorrow's picture: Seven Jets from Comet Hale-Bopp . ... About APOD . ...

There will be a total lunar eclipse during the morning of Thursday 28th October. The Moon will enter the faint penumbral shadow cast by the Earth at 1.06 am, and the partial eclipse phase will begin at 2.14 am. ... However, during such an eclipse, the Moon usually remains visible because some sunlight passing through the Earth's atmosphere is refracted in the direction of the Moon. ... FOR FURTHER INFORMATION CONTACT: John McFarland at the Armagh Observatory, College Hill, Armagh, BT61 9DG. ...

... The Russian TESIS (FIAN) Solar Observatory has transmitted observations back to Earth of the solar eclipse made on July 22nd, 2009. ... On the first occasion, the satellite passed through the eclipse area at 04:30 Moscow time, making it the first on our planet to see the shadow of the Moon, which was still in space and was only approaching the Earth ( film 1.2 MB, wmv format ). ... The first Moon passage over the solar disk (00:30 UT) (Movie wmv; 1.2 MB) . ...

... One of the widely used models of neural network is the multi-layered perceptron [6]. The model network has layers of input and output elements called neurons. ... An input vector is put on the input layer, passes through the hidden layers, and arrives at the output layer. The corresponding output vector is determined by calculation of the neuron activity level for each layer using already known values of neuron activity of the previous layers. ... Training was an iterative process. ...

Various types of stars have dust around them. In the well known case of the Pleiades the dust around the stars is unrelated to the stars, and is instead dust from an interstellar cloud that the Pleiades cluster has drifted into on its way through the galactic disk. ... The dust in interstellar space is observed in a variety of ways: due to its passive absorption of starlight ("extinction"), by its production of polarization in starlight, and then at long wavelengths due to its thermal radiation. ...

... 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....

... In particular, members of the project regularly organize events dedicated to various interesting astronomical phenomena and events - solar and lunar eclipses, transit of Venus, etc. On November 3rd a team of astronomers will venture deep into Turkana National Park, Kenya and attempt to broadcast the magic of a total solar eclipse to the world. ... Solar eclipse . A solar eclipse occurs when the Moon passes between the Sun and Earth, and the Moon fully or partially blocks the Sun from our view. ...

... Home Articles Best Celestial Events of 2006 . ... Clear Sky Chart . ... Beyond New York City . ... Best Celestial Events of 2006 . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . Observing Resources for Amateur Astronomers - Part 2: Intermediate Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... Star Clusters . Stars . ... Stars@ESO . ... Recent observations with the Hubble Space Telescope (HST) have documented an unexpected and rapid, seven-fold brightening of an unusual double star at the centre of the impressive 47 Tucanae globular cluster in the southern sky. ... The astronomers [1] who are involved in this observational program find that this event cannot be explained by any of the common processes known to occur in such stars. ... Milky Way : Star : Grouping : Cluster : Globular . ...

... Dept. for Astrometry & Space Geodynamics . ... Dept. for Physics of Stars&Galaxies . ... Dept. for Physics of Planetary Systems . ... Science . ... All Pages . ... Research of the stars with planets which pass apparent star disk (transiting exoplanets). The transit method based on a detection star brightness decrease during a passing of planet in front of its disk. Observed brightness system decries when planet pass star disk and its volume depend of the relative sizes star and planet. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Colin Johnston . ... Milky Way . Stars . ... Monthly Sky Notes . ... June . ... This red supergiant is the brightest star in the constellation Scorpius and is of awesome size. ... Returning to Vega (which will be the pole star in about 12 000 years from now), follow an imaginary line between it and Arcturus, this line will cross two more constellations, faint and sprawling Hercules and that celestial smile Corona Borealis. ...

... The awsome spectacle of a brilliant comet, with its long ghostly tail streaming behind it, is a rare event. ... Only one other comet, Comet Halley, was seen so far from the Sun, giving scientists an opportunity to watch it as it slowly warmed up and sprouted a tail. ... Comets are the Rip Van Winkles of the solar system -- mini-worlds that have changed little during their 4.5-billion-year nap far from the Sun. ... Observing Comets . ... Once, comets inhabited the entire solar system. ...

GALAXIES cenA .tiff 40 Bright Radio Galaxy M31.tiff Nikon Andromeda Galaxy (note HII regions in spiral arms) ngc6744.tiff 40 NGC 6744 a face-on spiral clouds_20d.tiff H'blad The Magellanic Clouds our nearest neighbours Lmc_7.tiff Nikon The Large Magellanic Clouds Lmc_zoom.tiff Nikon Detail of previous image smc_7.tiff Nikon The Small Magellanic Clouds smc-zoom.tiff Nikon Detail of previous image 30dor_40_BVR.tiff 40 The 30 Dor ... B [OIII] Halpha trifid.tiff 40" The Trifid Nebula. ...

Stellar Clusters are very useful laboratories for empirically studying stellar evolution. ... All cluster stars are at the same distance . All cluster stars have the same physical age . ... CM diagram Young Cluster In this case we see the Main Sequence fully represented. The blue dots represent massive stars with short main sequence lifetimes. ... Thus, identifying the most massive star which is still on the main sequence is an effective means of determining the age of a stellar cluster. ...

You Can Make Stellar Images Brighter . Articles | ... A few months ago I wrote an article titled "You Can’t Make Them Brighter". So why am I now writing that you can make them brighter. ... The image of a focused star is actually a small disk called the Airy disk, named after the 19 th century scientist Sir George Airy. ... For a given aperture, a smaller Airy disk means that the light is focused to a smaller disk and is therefore brighter. ... www.astronomy.net . About Astronomy Net | ...

. ASME Paper 95-GT-437. Jacques Lewalle, jlewalle@syr.edu

A Canadian and American team of Astronomers have used the 305-m wide Arecibo radio dish, the world's largest and most sensitive radio telescope, to uncover a dozen new super-fast-spinning pulsars. The team directed their search for these rare and exotic stars by pointing the Arecibo radio telescope towards massive star clusters, called Globular Clusters, orbiting our Milky Way galaxy. ... One of the most exotic residents in the Globular cluster system are the millisecond pulsars. ...

Total solar eclipse occurs on Friday, 1 August, 2008, in northern Canada, the Arctic, and Asia. The 2008 event will be visible in northern Canada, Greenland, Siberia, Mongolia and parts of China. The path of totality of the 2008 eclipse passes a couple of particularly interesting destinations and cities: Novosibirsk, in Siberia, Barnaul in Southern Siberia in Altai region, and the Altai Mountains region. ... Time of Novosibirsk . ... Solar Eclipse 2008 . Total Eclipse 2008 in Siberia . ...