... Tonight's Sky . ... The Magazine . ... Star Atlas . ... An artificial comet holds secrets to Earths life . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... The planet has extreme temperature swings and perhaps active lava flows. ... A digital supplement to Astronomy magazine. ... Join TravelQuest International with Astronomy and Discover magazines on one of three great tour options surrounding this celestial spectacle . ... Astronomy Magazine . ...

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• Jupiter joins Venus in the early evening | Astronomy.com
• Bright planets meet at dusk | Astronomy.com
• News | Astronomy.com

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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• Galaxy Gallery Page III
• Astro-2 and the UIT Experiment

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

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• Armagh Observatory
• Las Cumbres Observatory, Asteroids, comets, Messier objects, supernova
• Objects in the Sky

... Stars : Binary Stars * Black Holes * Globular Clusters * Individual Stars * Neutron Stars * Nurseries * Open Clusters * Sun * White Dwarfs . ... Nebulae : Dark Nebulae * Emission Nebulae * Planetary Nebulae * Reflection Nebulae * Supernova Remnants . Miscellaneous : Quasars/Active Galactic Nuclei * Dark Matter . Sun * Mercury * Venus * Earth * Earth's Moon * Mars * Jupiter * Jupiter's Moons * Saturn * Saturn's Moons * Uranus * Neptune * Pluto . ... NASA Technical Rep.: ...

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• Charts
• APOD: 2003 July 5 - Centaurus A: X-Rays from an Active Galaxy
• APOD Index - Galaxies: Clusters of Galaxies

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... ESO . ... Survey Telescopes . ... Star Clusters . ... ESOcast . ... Stars@ESO . ... ESO Science Newsletter . ... ESO 3.6-metre telescope . ... TRAnsiting Planets and PlanetesImals Small Telescope . ... Now members of the public have a unique opportunity to go behind the scenes and follow astronomers on a planet hunt as it happens. ... ESOcast 80: Follow a Live Planet Hunt . ...

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• ESO - cosmology2002
• The distant active galaxy PKS 1830-211 from Hubble and ALMA | ESO
• The active galaxy NGC 3783 in the constellation of Centaurus | ESO

The Doppler shift is the effect of sound increasing or decreasing in pitch as an object moves towards or away from you. ... Light works the same way, except light is shifted to redder colours when an object is moving away, and to blue colours when an object is travelling towards us. ... Almost every object he observed had its light stretched to redder colours, indicating essentially everything in the Universe was moving away from us. ... So the Hubble constant tells us how old the Universe is. ...

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• Julie Banfield | Astronomer
• The SMS Survey
• Siding Spring Survey

Astronomy Picture of the Day . Centaurus A: X-Rays from an Active Galaxy . ... The diffuse high-energy glow represents gas throughout the galaxy heated to temperatures of millions of degrees C. At 11 million light-years distant in the constellation Centaurus , Centaurus A (NGC 5128) is the closest active galaxy . ... Publications with keywords: Centaurus A - NGC 5128 - X-ray - active galaxy . Publications with words: Centaurus A - NGC 5128 - X-ray - active galaxy . ... The Arms of NGC 4258 . ...

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• Centaurus A: X Rays from an Active Galaxy
• Астронет > Centaurus A: X Rays from an Active Galaxy
• Астронет > Centaurus A: X-Rays from an Active Galaxy

... This talk focuses on exploring the connection between Ly absorbers and galaxies. The theorist view of gas in the low z universe is based on the filamentary structures that are evident in simulations based on the CDM paradigm. ... The observer's view of gas in the low-z universe is based on the Ly absorbers which have column densities as low as 10 cm , while galaxies are at column densities of 10 cm . ... The absorber has N cm . ... Can examine LSS defined by gas-rich galaxies around absorbers. ...

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• The Search for HVCs in Other Galaxies
• Pulsar Highlights - A Dozen new MSPs in Globular Clusters
• REU Science Area

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Astrophysics graduate student programs . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

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• ATNF Colloquium
• Australia Telescope National Facility
• Compact Stellar Systems in the Fornax Cluster: Super-massive Star Clusters or

Nowadays at the Department the experimental and theoretical investigations, including astronomical and ionospheric observations, active experiments with space vehicles are taking place. ... Solar Corona physics and erruptive phenomenae. ... Stellar astronomy. ... The Department has organized and put into practice more then 50 expeditions for observation of Solar ecllipces, aurorae polaris, comets, meteor streams, controlled space experiments, and also for investigations of geophysical characteristics. ...

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... During several years of research on active galactic nuclei, I gained solid experience in both observing at the telescope and reducing optical ground- and space-based observations. My researches are focused on BL Lacertae objects and High Polarization Quasars, of which I have extensively studied the emission line luminosity, the broad-band flux energy distribution, and the host galaxy. During the last two years I concentrated my efforts on HST WFPC2 observation of a large sample of BL Lac. ...

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• Target Category and Target Description [Description]
• Phase I Target Naming Conventions
• Active galaxies and black holes

ESO PR Photo 18b/00 . ... Caption : Images of two of the novae in NGC 1316 that were discovered during the observational programme described in this Press Release. ... In particular, no less than four novae were detected in a single giant galaxy within only 11 days . ... Moreover, the discovery of four novae in one galaxy in the Fornax cluster was possible with only 3 hours of observing time per filter. ... ESO Press Information is available on the WWW at . http://www.eso.org/outreach/press-rel/ . ...

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• K-band Arcetri Obscured Supernova Search - Detected Supernovae
• A Search for Clustering around Herbig Ae/Be Stars
• K-band Arcetri Obscured Supernova Search - Ulirg Sample

... Home Gallery Astrophotography Deep Sky Images by Joe DiNapoli . ... Deep Sky Images by Joe DiNapoli . ... Deep Sky Gallery by Ed Fox . ... Beyond New York City . ... 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 . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

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• Deep Sky Gallery by Ed Fox ? Amateur Astronomers Association of New York
• Lecture Series 2009-2010 ? ?Best Targets for Amateur Astrophotography and What
• Observing Resources for Amateur Astronomers ? Part 3: Advanced Observers ?

... Astrophysics Group . ... MRAO Telescopes . AMI . ... This is a cosmic microwave background (CMB) telelescope with a difference, in that it is designed to survey the sky looking for galaxy clusters by means of the ?shadows? they cast against the CMB. This shadowing, the so-called SZ effect, is a remarkable phenomenon because it is independent of redshift, allowing AMI to find clusters which are so far away that their own emission would be too faint to detect ? ...

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• Astrophysics Group AMI Science
• Astrophysics Group Main Projects
• Astrophysics Group Pulsars

. Subdwarfs . Metal deficient red giants in galactic field . Red horizontal branch stars . Blue horizontal branch stars . Extended horizontal branch stars . Stars inside globular clusters . W Vir type stars . IRAS-sources identified with peculiar supergiants . RCrB type stars . Sakurai's object . peculiar supergiant FG Sge .

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• Search for distant radio galaxies in SAO
• SCORPIO: IFP Gallery
• Publication Search

... Dept. for Physics of Stars&Galaxies . ... Using a database view Sloan Digital Sky Survey (SDSS), containing almost a million spectra created 15,000 sample galaxies with active star formation, which is used for various studies and physical state of evolution of galaxies. ... Star clusters of the Galaxy . The project MWSC (Milky Way Star Clusters) directory using 2MASS, which includes nearly 500 million vision to the limit Ks = 15.3, analyzed more than 4,000 cluster-like objects in the galaxy. ...

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• Dept. for Physics of Stars&Galaxies
• The Laboratory of Astrometry
• MAO NASU :: Topic: 1st Announcement IAU Symposium 312 Star Clusters and Black

... ftp://www.kusastro.kyoto-u.ac.jp/pub/cgmw/ : This catalog, giving about 7000 galaxies behind the Milky Way between l = 210 degrees and 250 degrees, represents a systematic search for galaxies by means of 32 film copies of the UK Schmidt Southern Infrared Atlas on the Milky Way covering about 900 square degrees. ... Japan, Vol. ... This will be distributed upon request from Astronomical Data Analysis Center of the National Astronomical Observatory of Japan and other astronomical data centers. ...

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• Object Search and Classification
• Tclet for Cluster Database.
• "Structure" publications in 2004 year

Next: NICMOS Coronagraphic Surveys-Preliminary Results Up: No Title Previous: STScI NICMOS Software . NICMOS Coronagraphic Surveys-Preliminary Results . ... Observations with NICMOS . ... The Evolution of Stars seen with ISOCAM - the Need for NICMOS and VLT Follow Up. ... Results . ... The Formation and Evolution of LMC Rich Star Clusters: NGC 1818 . ... HST-NICMOS Observations of Galactic Bulges: Red Nuclei in Nearby Galaxies . ... Investigating the Evolution of Quasar Host Galaxies with NICMOS . ...

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• A Coronagraphic Search for Substellar Companions to Young Stars
• ST-ECF Grism Spectrum Software for NICMOS Grism Data
• NICMOS Observes the Galactic Center

... Bad Astronomy . ... Bitesize Astronomy . ... We've come a long way from cluster to cluster! ... Some of these objects turned out to be star clusters of various types, and other were true nebulae, or clouds of glowing gas. ... Therefore, by their reasoning, these spiral nebulae must be part of our own Milky Way. ... An established and respected astronomer, Heber Curtis, defended the idea that the nebulae were ``island universes'', clusters of stars and gas in their own right like the Milky Way. ...

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... galaxies: bulges galaxies: clusters: general galaxies: clusters: individual: . ... star formation statistics stellar content structure Cosmology ( cosmology :) cosmic background radiation ( cosmology :) cosmological parameters cosmology : miscellaneous cosmology : observations cosmology : theory ( cosmology :) dark ages, reionization, first stars ( cosmology :) dark energy ( cosmology :) dark matter ( cosmology :) diffuse radiation ( cosmology :) distance scale ( cosmology :) early Universe (...

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• Discovery of an isolated dwarf spheroidal galaxy neighboring the Local Group
• Detection of Radio Transients and Variable Radio Sources Using the Archive Data
• RCJ0311+0507