... What is pictured above is a remarkable 24 hour mosaic surrounding a spot on Sounio, Greece, right here on planet Earth. ... Also known as NGC 104, it roams the halo of our Milky Way Galaxy along with some 200 other globular star clusters. ... This broad expanse of glowing gas and dust presents a bird-like visage to astronomers from planet Earth, suggesting its popular moniker - The Seagull Nebula. ... A mere seven hundred light years from Earth, in the constellation Aquarius, a sun-like star is...

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... 2008 November 11 . The Cosmic Web of the Tarantula Nebula . ... Explanation: First cataloged as a star, 30 Doradus is actually an immense star forming region in nearby galaxy The Large Magellanic Cloud . The region's spidery appearance is responsible for its popular name, the Tarantula nebula , except that this tarantula is about 1,000 light-years across, and 180,000 light-years away in the southern constellation Dorado . ... About APOD | ... NASA Web Privacy Policy and Important Notices . ...

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• APOD: 2013 August 17 - M8: The Lagoon Nebula
• APOD: 2002 June 13 - The Tarantula Zone
• APOD: 2014 August 29 - The Wizard Nebula

... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Globular cluster NGC 2808, elliptical galaxy NGC 2986, and the Sextans Dwarf . ... The Dish Cluster, the Pencil Nebula, and spiral galaxy NGC 2655 . February 25 March 3, 2016: The Dish Cluster in Puppis offers small-telescope owners a nice view, while large-telescope owners can seek out the Pencil Nebula in Vela and spiral galaxy NGC 2655 in Camelopardalis. ... Large telescope: Spiral galaxy NGC 2655 . ...

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• What's the difference between globular clusters and dwarf spheroidal galaxies?
• Globular cluster M28, open cluster M25, and planetary nebula NGC 6781 |
• Astronomy Magazine - Interactive Star Charts, Planets, Meteors, Comets,

... 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. ...

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... 2000 August 4 . M15: Dense Globular Star Cluster . ... In fact, only 40,000 light-years away in the constellation Pegasus, M15 is one of the most densely packed globular star clusters in our Milky Way Galaxy. This stunning Hubble Space Telescope image of M15 shows thousands of individual stars across the central 10 or so light-years of the cluster, also cataloged as NGC 7078. ... Globular star clusters harbor from a hundred thousand up to a million stars and roam the Milky Way halo. ...

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• APOD: May 22, 1996 - Star Cluster in the Rosette Nebula
• APOD: 2000 January 11 - The Rosette Nebula in Hydrogen, Oxygen, and Sulfur
• APOD: January 6, 1999 - M6: The Butterfly Cluster

Proposal Identification No.: P1919 Date Received: 2004-Feb-02 23:39:55 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Prop osal Title: Regular Pulsars Galactic 57 Hours Observations of Two Eclipsing Millisecond Pulsar Binary Systems in Globular Clusters ABSTRACT: The precise mechanism that drives eclipsing millisecond pulsar systems is not yet certain, although various eclipse mo dels exist that do seem to supp ort many observations. ...

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• Pulsar Highlights - A Dozen new MSPs in Globular Clusters

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Telescopes and Observatories . ... The majestic star-forming region in the Lagoon Nebula. The pale ring to the right is an internal reflection in the telescope.€а (Image credit: ESO/ VPHAS+/ V. Kalari and J. Vink (Armagh Observatory) . ... The 18 component images were further processed twice. ... Venu and his colleagues use images like this to identify individual young forming stars in the Lagoon Nebula and determine their ages. ...

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• Astronotes | Armagh Planetarium's astronomy news from across the Universe -
• Viewing the Partial Solar Eclipse of 20 March 2014 | Astronotes
• Hubble shows us a spectacular star cluster | Astronotes

... ESO, the European Southern Observatory . ... ESO . ... Survey Telescopes . ... Galaxy Clusters . ... Star Clusters . ... Video News Releases . ... Stars@ESO . New on eso.org . ... ESO News . ... As we zoom in we can see many famous objects, including the Lagoon Nebula. In the final sequence we dive deep into the dusty regions and reveal two almost hidden globular clusters, UKS 1 and the newly discovered VVV CL001 in a new image from the VISTA telescope at ESOтАЩs Paranal Observatory in Chile. ...

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• Wide-field view of the newly discovered globular cluster VVV CL001 | ESO
• Detailed view of the Prawn Nebula from ESO's VST | ESO
• Visible/infrared cross-fade of the newly discovered globular star cluster VVV

Photon Scattering: Basic Principle of Photon Scattering . Audio Narration is available . No Scattering: Photon Source and Detector . ... For optical photons, scattering goes as wavelength to the -4 power. In the case of blue photons compared to red photons, this means that blue photons are about 10 times more likely to get scattered than red photons. ... Watch the blue photons scatter away from the detector . ... Interstellar dust make stars appear redder than they really are . ...

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• Astronomy HyperText Book: Stellar Clusters
• The Galaxy Gallery: Messier Objects
• Astronomy Plus CCD Images of Galaxies

Supernova 2009js in NGC 918 . This page is devoted to information on Supernova 2009js in NGC 918 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. Discovered independently by Lick Observatory Supernova Search (USA) and Koichi Itagaki (Japan). ... 2009/10/11.44 . 17.2 . ... Joseph Brimacombe . ...

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... Julianne Dalcanton, University of Washington . A Panchromatic Hubble Andromeda and Triangulum Survey - Globular Cluster Sequence Calibrations . ... QSO Absorption Line Systems from Dwarf Galaxies . ... SNAPshot observations of gravitational lens systems discovered via wide-field Herschel imaging . ... High-resolution UV studies of SAURON galaxies with WFC3: constraining recent star formation and its drivers in local early-type galaxies . ... The Hubble Constant: Completing HST's Legacy with WFC3 . ...

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• HST this week: 063
• Globular Cluster NGC 5986
• HST this week: 363

... Structure of Data . ... Catalog . ... In SAI OCL Catalog, we introduce our work on investigation of the Milky Way system of open star clusters. The main goal of our study is a search for new clusters using huge surveys. 168 new clusters have been already discovered by us using J,H,Ks data from 2MASS point source catalog. ... For 141 new clusters, we found their physical parameters using J,H,Ks data from 2MASS catalog and, for a number of clusters, our UBVRI CCD observational magnitudes. ...

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... A faint, dusty rose of the northern sky, emission nebula IC 410 lies about 12,000 light-years away in the constellation Auriga. The cloud of glowing hydrogen gas is over 100 light-years across, sculpted by stellar winds and radiation from embedded open star cluster NGC 1893. ... These "tadpoles" (seen just below center) are regions of denser, cooler gas, and more slowly resist the erosive radiation from the hot stars. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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Despite many decades of progress in understanding the evolution of star formation and stellar populations in galaxies, we have still fundamental questions that have remained unanswered. These include: how do stars cluster in galaxies, and how do these structures evolve in time? ... How are popular star formation rate indicators affected by the recent star formation history of a galaxy? ... The answers to these questions inform our theories for the evolution of galaxies through cosmic times. ...

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• GSAOI Orion Nebula Cluster Science Page
• Dougal Mackey - Conference Proceedings
• COALA - Computational Astrophysics Laboratory

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Portrait of Sir William Herschel (1738-1822) Royal Astronomical Society . Probably the most famous astronomer of the 18th century, Sir William Herschel discovered, in addition to the planet Uranus, many new nebulae, clusters of stars and binary stars. ... Other Herschel Family Portraits . Mirror by Herschel . Return to A Short History of Armagh Observatory . Last Revised: 2009 November 23rd . ...

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• FETTU - Page 1
• The Universe, Yours to Discover: an incredible 3D presentation, from Wednesday
• Japanese Discover Large Earth Crossing Asteroid

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Parkes | ... I work mainly as a radio astronomer, using powerful telescopes such as the Australia Telescope Compact Array, the Very Large Array, the Greenbank Telescope, and the Westerbork Synthesis Radio Telescope array. ... E-Mail: shea.brown@csiro.au . ...

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• Powerful AGN and Their Host Galaxies Across Cosmic Time
• eclipsing_binary_pics.html
• ATNF Science Highlights

In autumn 1994, two groups of astronomers announced that they had discovered Cepheid variable stars in a distant cluster of galaxies. ... As the term suggests, variable stars change in brightness over time. ... Variable stars are an ideal way to get high-school students doing real science, with real data, from the real sky. ... a sky chart to find the stars . ... Students can use the nearby stars to estimate the magnitude of Delta. ... Locate the star Delta in Cepheus and estimate its brightness . ...

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• ASP: NGC Images on the Net
• ASP: More About Deep Space Objects and Cosmic Terms
• ASP: Card Games for the Whole Family - with a Cosmic Twist

Constraints on Cosmological Models from Cosmic Flows M. J. Hudson et al. University of Waterloo, Canada Cosmic ows are the only probe of the large-scale mass power spectrum available at low redshift. An important statistic is the bulk ow of a peculiar velocity sample with respect to the Cos- mic Microwave background. We compare the bulk ow of the SMAC cluster sample to the predictions of popular cosmological models and to other recent large-scale peculiar velocity surveys. ...

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• PPEUC Programme - Cosmic Microwave Background Workshop
• Astrophysics Group Cosmic Microwave Background (CMB)
• Astrophysics Group AMI Science

... Over the first 4 years, its X-ray telescopes eROSITA and ART-XC will survey the whole sky with a record sensitivity in the 0.5-10 keV energy band. ... The goal of the second international Spectrum-RG conference is to discuss the different scientific topics addressed by the mission, synergies with surveys at other wavelengths, and requirements to follow-up observations.Contributed talks and poster presentations are invited on the topics related to the SRG science goals. ... Active galactic nuclei . ...

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• Spectrum-Roentgen-Gamma - The astrophysical Project at IKI RAN

ECLIPSES, TRANSITS OF MERCURY AND VENUS . Year 1999 . Year 2000 . Year 2001 . Year 2002 . Year 2003 . Year 2004 . Year 2005 . ... Total solar eclipse . ... Transit of Mercury across the solar disk . ... Total lunar eclipse . ... Partial solar eclipse . ... Partial lunar eclipse . ... Annular solar eclipse . ... Penumbral lunar eclipse . ... big map . ... Transit of Venus across the solar disk . ... Annular-total solar eclipse . ... Non-central annular solar eclipse . ...

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• AE (eclipses, transits)