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 . ...

... 2001 December 19 . Finding Dark Matter . ... Explanation: Where is dark matter ? Galaxies rotate and move in clusters as if a tremendous amount of unseen matter is present. ... In the above frame from a computer simulation of our universe , a 300 million light-year slice shows dark matter in gray and galaxies as colored circles. The red box indicates the location of a rich cluster of galaxies , while the green box shows a more typical cross-section of our universe . ... About APOD | ...

... Still, the detailed information available from clusters of galaxies like Abell 1689 gives hope that one day full solutions will be found that will not only fully reveal the dark matter in clusters , but also reveal the amounts of dark energy in the universe needed to lie along the line of sight to the distant arcs . ... Publications with keywords: abell 1689 - galaxy cluster - dark matter . Publications with words: abell 1689 - galaxy cluster - dark matter . ... The Hercules Cluster of Galaxies . ...

... Milky Way . ... Map of the Milky Way (based on data from NASA's Spitzer Space Telescope) showing its two major stellar arms and central bar. ... ТљIn written science fiction, one often encounters another navigational convention, where towards the Galactic Centre is described as т??Corewardт??, away from the Centre towards the rim of the Milky Way is т??Rimwardт??, objects in the direction of the Galaxyт??s rotation are т??Spinwardт??, while objects in the opposite direction are т??antispinwardт?? ...

... January 8, 2007 . ... SENTINEL CORRESPONDENT . Astronomers at UC Santa Cruz have discovered a surprisingly massive halo of bright, old stars around our galactic neighbor Andromeda, pushing the outer limits of the galaxy to 1.5 million light years, and teaching them how spiral galaxies behave. ... Younger stars may be remnants of a galaxy devoured, but older stars could have formed with the birth of the galaxy. ... http://www.santacruzsentinel.com/archive/2007/January/08/local/stories/03local.htm . ...

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Moon . ... Observing . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Would it be possible to find a moon around an extrasolar planet? ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... About ATNF overview . ... Governance overview . Australia Telescope Steering Committee . ... Parkes radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Finding the Bivariate Brightness Distribution of galaxies from an H I selected sample . ... A method is presented that will enable the bivariate luminosity/surface brightness distribution of galaxies to be determined from a relatively small H I selected sample. ... PICASSO - an automated galaxy finder . ...

Find Similar Abstracts . ... The velocity of clusters of galaxies relative to the microwave background. ... BACKGROUND RADIATION, GALACTIC CLUSTERS, MICROWAVE SCATTERING, VELOCITY MEASUREMENT, HIGH TEMPERATURE GASES, MICROWAVES, POLARIZED RADIATION, RADIAL VELOCITY, RADIO ASTRONOMY, THOMSON SCATTERING . ... Use: Authors Title Abstract Text Text Query with Keywords Return: Query Results Query Form Database: Astronomy Instrumentation Physics and Geophysics ABSTRACT QUERY USER FEEDBACK HELP ...

... Like a team of real-life Indiana Joneses, scientists have explored our galaxy and found a treasure trove of hidden gems. These gems are much more spectacular than the diamonds that Indiana Jones might hope to find they are collections of dazzling stars! ... However, using a new telescope called the VISTA telescope, Professor Kurtev and other astronomers have discovered 96 new Open Clusters in our galaxy, the Milky Way, that had previously been hidden from view. ...

... Are HVCs a common feature of star forming galaxies? ... Consider the typical properties of the smallest HVCs (compact HVCs) found in HIPASS: . Distance . HI Mass . ... At 5 kpc . meager objects ~116 solar masses . ... 1.15 x 10 4 solar masses . ... Putman et al. (2003) found none to 10 7 solar masses. 2% of Sculptor to 3 x 10 6 solar masses by de Blok et al. (2001) found none. ... High velocity gas around other galaxies can be identified from maps and dynamics: . ... 2003) . ...

... NASA's Hubble Space Telescope has provided a never-before-seen view of a warped disk flooded with a torrent of ultraviolet light from hot gas trapped around a suspected massive black hole. ... This composite image of the core of the galaxy was constructed by combining a visible light image taken with Hubble's Wide Field Planetary Camera 2 (WFPC2), with a separate image taken in ultraviolet light with the Faint Object Camera (FOC). ... The inset box shows Hubble Space Telescope's field of view. ...

... 1b. Pole Star . ... Two bright constellations occupy opposite sides of the pole star--the Big Dipper and Cassiopeia . ... The Big Dipper consists of 7 bright stars, forming a dipper, a small pot wi