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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... Jupiter's Rings . ... Unlike Saturn's bright rings which are composed of chunks of rock and ice, Jupiter's rings appear to consist of fine particles of dust. ... Exploring Saturn's Rings . ... By watching a star flicker and fade as it passed behind Saturn's rings, NASA's Voyager 2 spacecraft was able explore the ring system in amazing detail. ... Saturn's spectacular system of bright rings has been the subject of study and wonder since Galileo first turned his telescope on the ringed planet in 1610....

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... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2000 February 28 . The Sombrero Galaxy from VLT . ... FORS1 , VLT ANTU , ESO . ... Reasons include the Sombrero 's unusually large and extended central bulge of stars, and dark prominent dust lanes that appear in a disk that we see nearly edge-on. Billions of old stars cause the diffuse glow of the extended central bulge. ... About APOD | ...

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• APOD: February 22, 1999 - NGC 1316: After Galaxies Collide
• APOD: February 3, 1998 - A Magellanic Mural
• APOD: February 5, 1996 - COBE Dipole: Speeding Through the Universe

... February 23, 1998 . M104: The Sombrero Galaxy . Explanation: What's going on in the center of this spiral galaxy ? Named the Sombrero Galaxy for its hat-like resemblance, M104 features a prominent dust lane and a bright halo of stars and globular clusters . ... This X-ray emission coupled with unusually high central stellar speeds cause many astronomers to speculate that a black hole lies at the Sombrero's center - a black hole possibly a billion times the mass of our Sun. ...

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• APOD: 2004 February 11 - M64: The Sleeping Beauty Galaxy
• APOD: February 28, 1997 - Edge-On Spiral Galaxy NGC 891
• APOD: 2011 February 26 - Shell Galaxies in Pisces

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Observing . ... Why do the constellations and the Moon appear upside down from the Southern Hemisphere? ... From the Southern Hemisphere, any object or constellation that lies near the celestial equator (the imaginary line that divides the northern and southern halves of the sky) would appear both upside down and reversed left to right compared to a northern perspective. ... Get instant access to subscriber content on Astronomy...

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• How were the constellation boundaries set? They appear pretty arbitrary. |
• Why do some stars appear to flash a variety of different colors when you look
• Can you explain Mercury's retrograde motion? Do other planets appear to do this

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

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... Active Disk Building in a Local HI-massive LIRG . by Michelle Cluver (UCT) . ... However, the mid-infrared uncovers a star-forming disk housing an intense starburst with a star formation rate of approximately 21 Msun/yr (Cluver et al. 2008 , 2010 ).This luminous infrared galaxy (LIRG) appears to be undergoing asymmetric inside-out disk building, with a star formation efficiency comparable to local disk galaxies and quite different to merger-driven starbursts. ... today * ATNF | ...

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• NGC 2915: The Darkest Spiral Galaxy

... This story was presented at a press conference at the American Astronomical Society meeting in Atlanta, Georgia, at 10am on 7th January 2004, US Eastern Time (2am 8th January AEST). ... The animation uses data from the Anglo-Australian Telescope (at Siding Spring Observatory) and the Blanco Telescope (at Cerro Tololo Observatory), and should be credited to NASA. NASA Website: The galaxy filament was first identified using the Blanco Telescope at Cerro Tololo Interamerican Observatory: . ...

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• Mike Bessell, MSSSO - Images
• VV29 = Arp 188 = The Chainsaw Galaxy
• GSAOI Dwarf Galaxies Science Page

An image of the grand design of spiral galaxy M100 obtained with NASA's Hubble Space Telescope resolves individual stars within the majestic spiral arms. ... Hubble has the ability to resolve individual stars in other galaxies and measure accurately the light from very faint stars. This makes space telescope invaluable for identifying a rare class of pulsating stars, called Cepheid Variable stars embedded within M100's spiral arms. ... 617) 495-7062 . Fax: (617) 495-7356 . ...

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... Bringing news from across the Universe to children all around the world . ... Have you ever walked down the street late a night and seen a point of light in the distance? ... This is because things look fainter when they're farther away. ... That s what astronomers did in 1995 when the Hubble Space Telescope was pointed at a region of the night sky about the size a tennis ball would look if it were a 100-metres away. ... One camera, called MUSE, was used to take a fresh look at the patch of sky. ...

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• Around the Cat's Paw Nebula | ESO
• The composition of a star that should not exist | ESO
• The hidden fires of the Flame Nebula* | ESO

... In the nuclear area of the galaxy within the ring, the nucleus appears elongated, and a fainter 3rd star-like component is discernable. ... The 'yellowy' halo about the off-centre nucleus of the ring galaxy is likely composed of redder stars, while the color-neutral nucleus doesn't appear distinctly different in color than either of the ring 'impactor' candidates at bottom center and top right of the picture. ... If so then why are the bright regions within the ring apparently color neutral? ...

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• Making HST Pictures: Illustrations
• Starburst and Galaxy evolution
• Gregory F Snyder

Astronotes Armagh Planetarium's Stellar Blog! ... Our Galaxy . ... Other Galaxies . ... Telescopes and Observatories . ... Everyone loves stunning pictures of spiral galaxies,€а I have said this before and will no doubt say it again. The folks at the European Southern Observatory (ESO) know this too, and their latest public image release is a bumper set of serenely spinning spirals. ... Tweets that mention Six glorious spiral galaxies seen by the European Southern Observatory. ...

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