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 . ...

... Planets . ... Earth Satellites . ... Looking in the direction of the constellation Cygnus the Swan and launched by NASA in 2009 is the Kepler Space Observatory.Many previous missions searching for exoplanets mainly detected large giant planets, like large hot Jupiters (it is easier to detect larger planets).However KeplerтАЩs main objective is to search for much smaller planets located in a habitable zone which is not too close nor too far from their star; planets which may be just like our Earth. ...

... 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 . ...

Supernova discovery statistics for 2006 . ... Sorted by Name For the year 2006 , 556 supernovae and 37 extragalactic novae were reported. 550 of these supernovae were named by CBAT, 0 were given possible supernova designations, and 6 were not reported to CBAT. 71 supernovae were found in NGC/IC galaxies, 174 were found in named galaxies 134 objects were discovered by amateurs 3 were brighter than 13th Magnitude 44 were brighter than 16th Magnitude 166 were brighter than 18th Magnitude 418 ...

... Can one galaxy hide behind another? ... NGC 3293: A Bright Young Open Cluster . ... Hot blue stars shine brightly in this beautiful, recently formed galactic or "open" star cluster. ... Planetary Nebula NGC 7027 in Infrared . ... Even so, NGC 7027 is 14,000 times larger than the Earth-Sun distance. ... Starbirth in NGC 1808 . ... The center of galaxy NGC 1808 is bursting with new stars, but why? Being a barred spiral galaxy makes NGC 1808 somewhat similar to our own Milky Way Galaxy. ...

... IC1805 . IC1805 - The "Heart" Nebula . ... The largest and very diffuse part of this image, IC1805, contains large and bright star cluster Melotte 15 at its center. ... This image is a tricolor narrowband image, taken with Ha, OIII, and SII filters. ... Ha: 12.5 hours of 30 minute subs . OIII: 9 hours of 30 minute subs . SII: 10.5 hours of 30 minute subs ...totalling 32 hours . ... Image registration . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

... 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. ...

... Tonight's Sky . ... News . Observing . ... Sky this Month . ... 50 Weirdest Objects . ... Globular cluster NGC 2808, elliptical galaxy NGC 2986, and the Sextans Dwarf . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... New cluster is an ancient object . ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... A tussle in the distant Universe. This Hubble Space Telescope image shows evidence for a merger between a quasar and a companion galaxy. The quasar is the bright object just beneath the image center, and the wisps of material around it are remains of a galaxy disrupted by the interaction between it and the quasar. ... Galactic Nuclei: Old Quasars? Quasars as Probes of the Distant Universe . ... Quasars. ... The name quasar is made up with parts of the words "quasi-stellar radio." ...

... Next: Object Detection Using Up: Object Detection and Previous: Automated Classification of . ... A status report of the The GSC Object Classifier (GOC) project is presented. ... The GSC contains multiple entries for some objects due to plate overlap. It classifies objects as stars, non-stars, galaxies, blends and potential artifacts; the latter three classifications are rare, and only exist in GSC version 1.1, to which they were added manually. ... star, . ... non-star, . ...

... M4: The Closest Known Globular Cluster . ... Explanation: M4 is a globular cluster visible in dark skies about one degree west of the bright star Antares in the constellation Scorpius . M4 is perhaps the closest globular cluster at 7000 light years , meaning that we see M4 only as it was 7000 years ago, near the dawn of recorded human history . Although containing hundreds of thousands of stars and spanning over 50 light-years, M4 is one of the smallest and sparsest globular clusters known. ...

NGC 5986, a little-studied southern-hemisphere globular cluster, is remarkable in containing two very luminous A-F type stars, discovered by me in the 1970's. These objects are probably in their final evolution off the asymptotic giant branch. ... Determining the distance to NGC 5986 will help calibrate the absolute brightnesses of post-AGB A-F stars. ... NGC 5986: last updated 2001 December 20 . Mike Siegel and I have found a post-AGB star in the globular cluster M79 (NGC 1904). ...

This service is intended as an aid to visually observing close-approaching asteroids. ... By clicking on the column headers for "Object Name", "Maximum Brightness", and "Maximum Angular Speed", you can sort the list by those fields. ... When This is the predicted time when the asteroid will be closest to the Earth. ... This field shows red if an asteroid comes as close as the moon. ... PHA (Potentially Hazardous Asteroid) This does NOT mean that this is going to hit the Earth. ...

Proteus . Neptune VIII - 1989N1 . Proteus [PROH-tee-us], like all six of Neptune's newly discovered small satellites, is one of the darkest objects in the solar system -- "as dark as soot" is not too strong of a description. ... Topographic Map of Proteus . ... As with all maps, it is the cartographer's interpretation; not all features are necessarily certain given the limited data available. ... This image is a shaded relief map of Proteus, a small inner satellite of Neptune. ...

... ESO, the European Southern Observatory . ... Galaxy Clusters . ... Video News Releases . ... New on eso.org . ... ESO News . ... View shopping cart . ... Black Hole at the Centre of our Galaxy . ... In the centre lies the faint newly found globular star cluster, VVV CL002. This previously unknown globular, which appears as an inconspicuous concentration of faint stars near the centre of the picture, lies close to the centre of the Milky Way. ... Milky Way : Star : Grouping : Cluster : Globular . ...

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...

... In the table given at a separate sheet enumerate in growing order (from 1 to 13) the size and the mass of each object: Milky Way Galaxy, Andromeda Galaxy, Neutron star, Electron, Mercury, The first satellite "Sputnik I", Venus, Pluto, Proton, Red dwarf, Black cat, White (Polar) bear, the Sun. ... Star setting. ... Comet Lovejoy. ... Radio- (operating wavelength is about 21 cm) and optical (operating in the light visible to the naked eye) telescopes have been used to study an astrophysical object. ...

... The Large Magellanic Cloud is a Dwarf Irregular galaxy in orbit around our own Milky Way. It is a large object, several degrees in size, and easily visible to the unaided eye in Southern Hemisphere skies. The LMC is located in the constellation of Doradus at about 5h30m Right Ascension, -68 degrees Declination, and lies at a distance of roughly 50 kiloparsecs (160,000 light years) from Earth. ...