... Molecular Cloud Barnard 68 . ... What used to be considered a hole in the sky is now known to astronomers as a dark molecular cloud . ... One of the most notable of these dark absorption nebulae is a cloud toward the constellation Ophiuchus known as Barnard 68 , pictured above . ... It is not known exactly how molecular clouds like Barnard 68 form, but it is known that these clouds are themselves likely places for new stars to form . ... NASA Official: Jay Norris. ... Coreshine from a Dark Cloud . ...

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Today's APOD | ... Editor's choices for the most educational Astronomy Pictures of the Day about dark nebulae: . APOD: 2006 April 9 - Molecular Cloud Barnard 68 . Explanation: Where did all the stars go? What used to be considered a hole in the sky is now known to astronomers as a dark molecular cloud . ... APOD: 2003 July 13 - The Horsehead Nebula . Explanation: One of the most identifiable nebulae in the sky, the Horsehead Nebula in Orion , is part of a large, dark, molecular cloud . ...

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• APOD: 2014 December 14 - Molecular Cloud Barnard 68
• APOD: 2012 January 29 - Molecular Cloud Barnard 68
• APOD: 2009 June 23 - Molecular Cloud Barnard 68

I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

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... To shed new light on these mysteries, we combine the gravitational lensing power of 25 massive galaxy clusters with HST's enhanced panchromatic imaging capabilities (WFC3 and the restored ACS) to test structure formation models with unprecedented precision. We have dubbed our program CLASH, which stands for: . ... CLASH: An Innovative Survey to Place New Constraints on the Fundamental Components of the Cosmos using the Hubble Space Telescope . ...

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... Armagh Planetarium . ... Universe . ... Posted on November 25, 2011 | ... Continue Reading.. ... 1 Comment Here is possibly the only joke in all of astronomy. ... Posted on October 20, 2011 | ... Newer Entries . Hello, IтАЩm Colin, welcoming you to Astronotes, the PlanetariumтАЩs official blog. Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ... So that's the introduction out of the way, now on with the Universe! ...

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• The Lagoon Nebula (M8) reveals its secrets | Astronotes
• Stellar Nursery NGC 6357: Image of the Month | Astronotes
• Cosmology | Astronotes

EMBARGOED UNTIL: 9:00 A.M. (EDT) June 10, 1999 PHOTO NO.: ... Credit: M. Heydari-Malayeri (Paris Observatory ) and NASA/ESA NOTE TO EDITORS: Image files are available on the Internet at: http :// oposite.stsci.edu / pubinfo /pr/ 1999 /23 or via links in: http :// oposite.stsci.edu / pubinfo /latest.html http :// oposite.stsci.edu / pubinfo /pictures.html Higher resolution digital versions (300 dpi JPEG and TIFF) of the release images are available at: http :// oposite.stsci.edu / ...

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• Thought-Provoking Imagery Shows Sun's Place in the Galaxy
• APOD: June 21, 1999 - The Galactic Center in Infrared
• Astronomy Picture of the Day

... We still have a long distance to cover before we leave the Milky Way Galaxy -- tens of thousands of lightyears, as a matter of fact -- so let's stop by some interesting objects on the way. ... But we have reached the edge of the Milky Way Galaxy. ... We don't know, but we do know that there are countless voyages left to take. To continue the virtual voyage beyond our galaxy, go to Kent Cheatham's "A Walk in the Stars" at http://www.ionet.net/~cheatham/astro/astrotour.shtml . ...

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• ASP: Beacons in the Gloom
• ASP: Counterpoint: Where Is the Best Place to View a Solar Eclipse?
• ASP: Seeing Our Place in the Solar System

... self-absorption - the absorption of light shining on an object by a process similar to that which produced the light originally; if a cloud emits less light than it absorbs from other clouds behind it, this net loss of light, termed self-absorption , causes the foreground cloud to appear darker than the background field (the term is from spectroscopy, where small absorption dips sometimes occur in larger emission lines, making the latter look as if it is absorbing part of itself) . ... HISA Main ...

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• The Pleiades
• Diffuse Galactic Light in the Large Magellanic Cloud
• The Tarantula Nebula

... Tonight's Sky . ... Star Atlas . ... stars . ... APEX turns its eye to dark clouds in Taurus . Behind these clouds lie rich areas of star formation. ... APEX image of a star-forming filament in Taurus. ... In it, newborn stars are hidden, and dense clouds of gas are on the verge of collapsing to form yet more stars. ... The Taurus Molecular Cloud is particularly dark at visible wavelengths as it lacks the massive stars that illuminate the nebulae in other star-formation regions such as Orion. ...

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• A dark patch in Orion star formation | Astronomy.com
• Explosion illuminates invisible galaxy in the Dark Ages | Astronomy.com
• Curious dark nebula seen as never before | Astronomy.com

... The 9th European Symposium for the Protection of the Night Sky will take place in the Market Place Theatre in Armagh from 17 to 19 September 2009. This will be the main European event on the topic of Light Pollution for 2009 and is supported by the International Dark Sky Association and national light pollution groups throughout Europe. Presentations will be given by a wide range of experts from Ireland and across Europe. ... International Year of Astronomy, Ireland National Node . ...

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• Objects in the Sky
• Light Pollution
• What is light? | International Year of Astronomy in Ireland | Astronomy 2009

... X-rays are made up of photons that are emitted from stars, or quasars, or supernovae, the sun, or simply: anything that is undergoing a change either in size or temperature or giving out heat. ... in an X-ray binary star system, in which one normal star's orbit is crossed by a neutron star, when the neutron star by means of gravitational pull takes matter from the normal star X-rays form. ... Artists conception of a normal star (HDE 226868) and a black hole taking matter from the normal star. ...

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• The AstroStat Slog light curve
• The AstroStat Slog light curves

... About meteorites . ... Meteorite Encyclopedia . ... About laboratory . ... On the night of September 24-25, in the north of Irkutsk Oblast, local residents saw a brightly glowing space object draw a line across the sky and fall into the taiga. ... But scientists learned of the heavenly visitor only on October 3, when a fax arrived at the Institute of Sun And Earth Physics from Bodaibo. ... The first thing we did was to interview residents of villages located along the meteor's flight path. ...