... Most bright spots in the featured image are galaxies in this cluster. A Dark Earth with a Red Sprite . ... Earth's annual Geminid meteor shower did not disappoint, peaking before dawn on December 14 as our fair planet plowed through dust from active asteroid 3200 Phaethon. ... The Horsehead Nebula . ... Like rainbows that are caused by rain, arcs of sunlight broken up into component colors can also result when ice crystals floating in Earth's atmosphere act together as a gigantic prism. ...

... 2009 December 10 . The Colors of IC 1795 . ... Explanation: This colorful cosmic portrait features glowing gas and obscuring dust clouds in IC 1795, a star forming region in the northern constellation Cassiopeia. ... Not far on the sky from the famous Double Star Cluster in Perseus, IC 1795 is itself located next to IC 1805, the Heart Nebula , as part of a complex of star forming regions that lie at the edge of a large molecular cloud. ... About APOD | ... A service of: ASD at NASA / GSFC . ...

... STScI-PRC00-08 HUBBLE OPENS ITS EYE ON THE UNIVERSE AND CAPTURES A COSMIC MAGNIFYING GLASS Scanning the heavens for the first time since the successful December 1999 servicing mission, NASA's Hubble Space Telescope has imaged a giant, cosmic magnifying glass, a massive cluster of galaxies called Abell 2218. ... The cluster is so massive that its enormous gravitational field deflects light rays passing through it, much as an optical lens bends light to form an image. ... Blue pinpoints hot young...

... Tonight's Sky . ... The Magazine . ... Observing . ... Subscriber Extras . ... Web Extras . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Web Extra: Capturing a colorful sky . ... Get instant access to subscriber content on Astronomy.com! ... BONUS web extras not included in the magazine . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... Survey Telescopes . ... Star Clusters . ... FLAMES . ... 100 Hours of Astronomy . ... IMAX€о 3D Film Hidden Universe . ... This image, the first to be released publicly from VISTA, the worldтАЩs largest survey telescope, shows the spectacular star-forming region known as the Flame Nebula, or NGC 2024, in the constellation of Orion (the Hunter) and its surroundings. ...

... In typical nightly use, the wide field and planetary telescope and cameras record images of favorably placed objects in the sky, including constellations, bright variable stars, nebulae through narrow-band filters, comets, the Moon, and planets. ... Shared Skies telescopes are available for use by students at the University of Louisville and the University of Southern Queensland, and by teachers and students in middle and high schools mentored by faculty at the universities. ...

... International Year of Astronomy in Ireland . ... Christmas Moon", painting by Miruna Popescu, Armagh Observatory, featured as " Lunar photo of the Day " and " Astronomy Sketch of the Day " on 25 December 2009. ... To mark the 400th anniversary of GalileoтАЩs first use of the telescope to observe the sky, 2009 has been celebrated worldwide as the International Year of Astronomy. Moon over Armagh - link to Astronomy Sketch of the Day on 25 December 2009 . ... Monday, 11 May 2009 23:54 . ...

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

... HST . ... Data . ... HST Peer Review Process . ... HST Overview . ... Cycle 24 Announcement . ... Retrieving HST Data . ... HST imaging should resolve the galaxy into more than 100 million stars, all with common distances and foreground extinctions. ... Recently, deep images from the ACS camera aboard HST provided conclusive evidence that several massive intermediate-age star clusters in the LMC and SMC present multiple main-sequence turn-offs (MMSTO), and in some cases also dual red clumps. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Although galaxy mergers are thought to play an important role in forming elliptical galaxies, mergers in galaxy clusters have drawn less attention compared to mergers in field environments due to high peculiar velocities of cluster galaxies. ...

... Using the DRAO Synthesis Telescope (Landecker et al. 2000), the Canadian Galactic Plane Survey ( CGPS ; Taylor et al. 2002) has captured a multitude of HISA features, the majority of which are invisible in prior surveys at lower resolution. ... Since the HISA gas temperature must be less than the background brightness temperature, all the H I shown in this poster has T ~ 100 K. Figure 1 provides panoramic views of the cold H I visible as HISA in the CGPS. ... GIFs: HISA + CO | HISA only | ...

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Monthly Sky Notes . ... This month Jupiter the largest of all planets, remains visible in the sky after sunset, not setting until after 11pm.€а On the evening of 12and 13 December the bright star-like object close to the Moon will be this gas giant planet. ... Rising this month is the great winter constellation of Orion the Hunter who will remain in our night sky through until March. ... Tweets that mention Wonders of the December Sky | ...

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. ...

... Articles | ... Forums . ... 230 deg . 49 deg . ... 130 deg . ... More Info . ... 210 deg . ... 168 deg . ... 249 deg . ... 195 deg . ... 271 deg . ... 110 deg . ... 338 deg . ... July 15 . 247 deg . ... 224 deg . ... 340 deg . ... July Phoenicids (PHE) . ... August 10 . 341 deg . ... 339 deg . ... 307 deg . ... 334 deg . ... 335 deg . ... 286 deg . ... 327 deg . ... 262 deg . ... 102 deg . ... 153 deg . ... 117 deg . ... December 2 . ... 123 deg . ... 100 deg . ... www.astronomy.net . ...

... 11 Yellow-Green (78% transmission): Contrasts well with the red and blue characteristics of surface features on Jupiter and Saturn. ... 82A Light Blue (73% transmission): Useful on the Moon, Mars, Jupiter, and Saturn, this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. ... Meade Series 4000 Photo-Visual Color Filters may be ordered individually or in the following sets: . ... Meade Series 4000 Broadband Nebular Filters . ...

... The picture shows sketches of the optical and ultraviolet (top, left) and X-ray (top, right) spectra of a typical quasar or AGN (Active Galactic Nucleus). These spectra are full of sharp features due to the interaction of atoms with light ('atomic features'). They can be high (= bright) points, called 'emission lines' or low (= dark) points, called 'absorption lines' . ... Broad Emission Lines ("BELs") [seen in 100% of AGN], . ... Broad Absorption Lines ("BALs") [see in only 10% of AGN], . ...

... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... SUBJECT: 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... which will be held in Beijing, P.R. China, from August 25-29, 2014, hosted by Chinese Academy of Sciences . ... China), . ... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. ...

This page is devoted to information on Supernova 1999gi in NGC 3184 . ... Information on the original web pages for many of these images can be found on the Supernova links web page. ... NGC 3184 is a fairly close Mag 10.3 galaxy, only about half as distant as the Virgo cluster. ... Seiichi Yoshida has a 1999gi page . Odd Trondal's 1999gi page . ... CfA image . ... 14.5 . ... Jean Marie Llapasset image . ... vsnet-alert 3805 ] SN 1999gi in NGC 3184 . vsnet-chat 2438 ] Host galaxy of SN1999gi . ...

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home publications > mercury . ... Let Venus Be My Guide . Mercury, July/August 1997 Table of Contents . ... Earth's simmering sibling burns through our early evening skies in July and August. ... Venus's bland, dense, cloudy atmosphere does not allow us to see the surface. Astronomers in the 1930s, looking at the sunlight reflected from Venus, discovered that its atmosphere is rich in carbon dioxide. ... Venus's atmosphere, 96 percent carbon dioxide, is a car with the windows rolled up tight. ...