The Colorful Clouds of Rho Ophiuchi . ... The blue regions shine primarily by reflected light. Blue light from the star rho Ophiuchi and nearby stars reflects more efficiently off this portion of the nebula than red light. ... The Rho Ophiuchi star clouds , well in front of the globular cluster M4 visible on far lower left, are even more colorful than humans can see - the clouds emits light in every wavelength band from the radio to the gamma-ray. ... NASA Official: Jay Norris. ...

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• The Colorful Clouds of Rho Ophiuchi
• Астронет > The Colorful Clouds of Rho Ophiuchi
• Sunspot Region 30

... 2002 July 18 . Sunspot Region 30 . Credit: MDI , SOHO , ESA , NASA . Explanation: The solar active region designated number 10030 (or simply region 30) is now appearing on the visible hemisphere of the closest star . ... The panels above were recorded July 15, 16, and 17 (top to bottom) by the MDI instrument on the space-based SOHO Observatory as the solar rotation slowly carried the large, dynamic sunspot group across the Sun's nearside . ... About APOD | ... NASA Technical Rep.: ...

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• APOD: 2007 September 3 - The Colorful Clouds of Rho Ophiuchi
• APOD: 2004 June 2 - The Colorful Clouds of Rho Ophiuchi
• APOD: 2005 July 9 - The Colorful Clouds of Rho Ophiuchi

... June 25, 1996 . A Star Forming Region in the LMC . ... Explanation: Stars sometimes form in colorful ways. Pictured above is a small region in the nearby LMC galaxy where stars are forming. ... It may develop a strong wind which pushes away nearby gas ; it may be so hot and intense that emitted light boils away nearby dust and gas , and it may be so massive that it soon goes supernova and catapults its elements back to the interstellar medium . ... About APOD | ... Specific rights apply. ...

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• APOD: April 9, 1999 - WR 104: Pinwheel Star
• APOD: June 16, 1998 - An Active Region of the Sun
• APOD: August 28, 1998 - Hydrogen Trifid

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Noctilucent clouds as photographed by Mark Bailey from Lisdoart on 14th July 2006 at 11.30 pm. ... These so-called noctilucent (night glowing) clouds (NLCs), are formed by sunlight reflecting off ice crystals high in the atmosphere, and usually appear in the northwest, through north to northeast during twilight in the late spring and summer months at our latitude. ...

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... About ATNF overview . ... Australia Telescope Steering Committee . ... LMC H II Region Luminosities versus . Observed Ionizing Stars . ... These values are compared to the observed H II region luminosities, yielding an estimate for the mean fraction of H-ionizing photons that escape the local nebulae in this sample. We formally estimate that, overall, 0-51% of the ionizing radiation escapes the local H II regions and is available to ionize the warm, ionized medium in the LMC. ...

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• A Blind HI Survey in the Great Attractor Region.
• DENSITY BOUNDING OF GIANT H II REGIONS AND THE IONIZATION OF THE DIFFUSE
• QUANTIFYING THE IONIZING FLUX ESCAPING FROM THE ULTRA-LUMINOUS H II REGIONS IN

Next: To produce a region Up: Image Display in Xwindows Previous: General usage. ... Menu items are chosen by clicking any mouse button (cf. ... save current cursor as an include region (counts within region will be included in subsequent calculations) . ... When another image is displayed, the earlier one can be compared with it by pressing its respective mouse button with cursor in the main display window. ... Table 1: Detailed list of menu options . ... color . ... enter/leave region sub-menu . ...

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• Region Names and Colors
• ChaMPlane data_archive_.html
• Chandra Supernova Remnants Catalog - Instrumental Artifacts

... 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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• http://www.stsci.edu/ftp/science/m87/press.txt
• STScI Preprint #1276
• WFPC2 Bright Star Avoidance Regions

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 IV: The Movies

... Current APO Weather . ... Search Site . ... Information for New Users . ... Technical Staff pages . Night Logs and Mailing Lists (maintained by APO) . ... Technical Documents and Database Search . ... Observer's Documentation and Procedures . ... Problem Reporting and APO Technical Documents Database Search . ... APO Drawing/Document Management Procedures . ... APO Technical Documents Database Search . Home Astrophysical Research Consortium . ... Mail Lists (maintained by APO) . ...

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• Astrophysical Research Consortium - Apache Point Observatory
• Night Side of Venus

... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Planetary Nebulae and HII regions in the Elliptical Galaxy NGC 5128 . ... NGC 5128 is the closest example of a giant early type (elliptical or S0) galaxy. Although often dubbed as a peculiar elliptical galaxy since it has a dust lane with recent star formation and an active galactic nucleus, the majority of early type galaxies have similar structures as revealed by recent surveys. ...

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• ESO - Thesis Topic: Probing the central regions of galaxies
• ESO - A number of OmegaCAM filters show vignetting in their central regions.
• ESO - Science Users Information

. " The Arecibo Observatory is sponsored by the National Science Foundation. Any opinions, findings and conclusions or recommendations . expressed in this publication are those of the author(s) and do not necessarily reflect the views of the National Science Foundation."

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• Research Areas National Astronomy and Ionosphere Center (Arecibo Observatory)
• Thesis Figures
• Colloquium Schedule

... 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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