Today's APOD | ... Editor's choices for the most educational Astronomy Pictures of the Day about emission nebulae: . ... Explanation: Clouds of glowing hydrogen gas mingle ominously with dark dust lanes in this close-up of IC 1396 , an active star forming region some 2,000 light years away in the constellation Cepheus. ... APOD: 2003 October 22 - The Heart and Soul Nebulas . ... The magnificent emission region, the Orion Nebula (aka M42), lies at the upper right of the picture. ... Index | ...

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• APOD: 2007 September 24 - A Galactic Star Forming Region in Infrared
• APOD: 2001 April 24 - NGC 2264: Stars, Dust, and Gas
• APOD: 2007 February 28 - Stars, Dust and Nebula in NGC 2170

... Credit: B. Wallis and R. Provin Explanation: What unusual eggs have been laid by this majestic swan ? The star forming region above, known as Swan Nebula , is the home of hot red-glowing gas, dark lanes of dust, bright young stars and -- what are those? ... The distinctive shape causes this region to have several other names, including the Omega Nebula, the Horseshoe Nebula, and the Lobster Nebula. ... August . ... Publications with keywords: M17 . ... M17: Omega Nebula Star Factory . ...

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• Journal "Peremennye Zvezdy"
• Астронет > Infrared Horsehead
• Астронет > Infrared Trifid

Henize 206 is a region of star formation in the Large Magellanic Cloud of the approximate scale of the Orion belt and sword. Our Spitzer Space Telescope infrared images and Cerro Tololo Inter-American Observatory (CTIO) optical images show that the region is experiencing very energetic star formation. ... A few percent of the total flux from this brightest region in Henize 206 emanates from infrared peaks of subparsec scale. ...

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• Brandon's Research
• The Effects of Dust in Simple Environments: Large Magellanic Cloud H II Regions
• Dr Andrea Banzatti | STScI

... August 28, 1998 . Hydrogen Trifid . ... Explanation: Clouds of glowing hydrogen gas mingle with dark dust lanes in the Trifid Nebula , a star forming region in the constellation Sagittarius. In this and other similar emission nebulae , energetic ultraviolet light from an embedded hot young star strips electrons from the surrounding hydrogen atoms . ... It shows those regions with substantial emission from atomic hydrogen . ... Tomorrow's picture: Star Colors . ... About APOD > . ...

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• APOD: August 6, 1998 - Infrared Horsehead
• NASA's Observatorium--Image Gallery: Stars
• Arcetri Star-Formation Group Publications

... All previous such superstars have been found along with many companion stars in the centres of crowded star clusters. The star is known as VFTS 682 from the VLT-FLAMES Tarantula Survey catalogue of the European Southern Observatory's Very Large Telescope (VLT) located at Paranal in Chile by means of the attached FLAMES instrument. ... Although VFTS 682 seems to be alone now it is not very far away from a very rich star cluster known as RMC 136 that contains several similar superstars. ...

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• Observatory to lead European Collaboration
• Anatomy of a decline
• The Electron Pressure Differential between the Sunspot Plume and the

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Stars . ... Space Flight . ... Monthly Sky Notes . ... NGC 6357's inner star forming region glows with the emission of ionized hydrogen gas. Image credit: ESO/VVV Survey/D. Minniti. ... Located around 8000 light years away in the constellation of Scorpius , NGC 6357 (sometimes called the Lobster Nebula ) is a typical stellar nursery, filled with vast clouds of gas and tendrils of dark dust. ... Subscribe to Astronotes . ...

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• M78 off Orion: Bladerunner Nebula? | Astronotes
• What is a nebula? | Astronotes
• The Lagoon Nebula (M8) reveals its secrets | Astronotes

... This is combined emission from all the gas clouds circling the black hole, between 0.1 and 10 light years out. ... These are the expanding clouds of gas left behind when a massive star comes to the end of its life and explodes, producing a supernova. ... Also known as the Veil nebula, a vast and beautiful whispy nebula left over from an exploding star. ... The Crab Nebula (120kb). ... Carbon Star (120kb) Red giant stars, surrounded by clouds or carbon dust. ... 3500 K star (64kb) , like Aldebaran. ...

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• Designated Observatory Application
• Pink Black Holes: Frequently Asked Questions
• GSAOI Orion Nebula Cluster Science Page

Photon Scattering: Basic Principle of Photon Scattering . Audio Narration is available . No Scattering: Photon Source and Detector . ... For optical photons, scattering goes as wavelength to the -4 power. In the case of blue photons compared to red photons, this means that blue photons are about 10 times more likely to get scattered than red photons. ... Watch the blue photons scatter away from the detector . ... Interstellar dust make stars appear redder than they really are . ...

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... Survey Telescopes . ... Today, ESO is unveiling an image of the little known Gum 19, a faint nebula that, in the infrared, appears dark on one half and bright on the other. ... Gum 19 is located in the direction of the constellation Vela (the Sail) at a distance of approximately 22 000 light years. ... At Paranal, ESO operates the Very Large Telescope, the worldтАЩs most advanced visible-light astronomical observatory and VISTA, the worldтАЩs largest survey telescope. ... Star-forming region Gum 19 ...

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• The Light and Dark Face of a Star-Forming Nebula | ESO United States
• The Light and Dark Face of a Star-Forming Nebula | ESO Ireland
• The Light and Dark Face of a Star-Forming Nebula | ESO Australia

... We report on our ongoing project ``Infrared Study of HII Regions Associated with Small Clouds.' ... These IR data, combined with optical imaging (which will be obtained from the IAC-80 telescope), IRAS survey maps, and existing CO observations of the associated clouds, will allow us to undertake a detailed investigation of the gas-to-dust mass ratio, initial mass function and the star-formation efficiency in these complexes. ... CHECKPSF: check the PSF (Point Spread Function) model, . ...

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... An investigation of the molecular clouds of the Carina HII region/molecular cloud complex - First results . ... The Carina Nebula is an extremely bright southern HII region embedded in a giant molecular cloud and contains some of the most massive stars known in our Galaxy. ... Here we present the results of the initial molecular cloud observations which were made by observing the 12CO(1-0) emission with the Mopra antenna . ... HII regions -- ISM: clouds, kinematics and dynamics -- stars: formation ....

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• Surface brightness measurements of extended galactic nebulae
• Every cloud has a translucent region
• ATNF Daily Astronomy Picture

... STScI-PRC95-45a CRUCIBLE OF CREATION: PANORAMIC HUBBLE MOSAIC ZOOMS IN ON MAELSTROM OF STAR BIRTH This spectacular color panorama of the center the Orion nebula is one of the largest pictures ever assembled from individual images taken with NASA's Hubble Space Telescope. ... Though this 2.5 light-years wide view is still a small portion of the entire nebula, it includes almost all of the light from the bright glowing clouds of gas and a star cluster associated with the nebula. ...

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• The Tarantula Nebula
• What is HISA?
• The Pleiades

... This image shows a 7th magnitude star cluster, it's reflection nebula, an extended diffuse nebula and Barnard Dark Nebulae. The bright star at the top is omicron Persei (Atik). The cluster next to Atik is a star forming region with as many as 300 stars ranging from the brightest at B5 to low mass brown dwarfs. ... The obscuring dark areas are the Barnard Dark Nebulae 1 through 4. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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... Star Atlas . Product Reviews . ... Airborne observatory views star-forming region W40 . ... A new image from NASAт??s Stratospheric Observatory for Infrared Astronomy (SOFIA) provides the highest resolution mid-infrared image taken to date of the massive star formation region in our galaxy known as W40. ... This mid-infrared image of the W40 star-forming region of the Milky Way galaxy was captured recently by the FORCAST instrument on the 100-inch telescope aboard the SOFIA flying observatory. ...

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• An anarchic region of star formation captured | Astronomy.com
• Stars emerge from darkness in nearby stellar nursery | Astronomy.com
• APEX turns its eye to dark clouds in Taurus | Astronomy.com

Class 1 Introduction, Background History of Modern Astronomy The Night Sky, Eclipses and the Seasons Kepler's Laws Newtonian Gravity General Relativity Matter and Light Telescopes Class 2 Solar System Characteristics Formation Exosolar Planets Class 3 Stars The Sun Stellar Evolution of Low and High Mass Stars Deaths of Stars Exotic Stars Class 4 Galaxies Galaxy Classification Formation of Galaxies Galactic Evolution ... So far, one planet has been studied by this method. ...

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• http://www.aaa.org/s932/images/09fallclass4.pdf
• Lecture Series 2011-2012 ? тАЬA Ray of Light in a Sea of Dark (Matter)тАЭ ?
• This MonthтАЩs Sky тАУ February 2016 ? Amateur Astronomers Association of New

... 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
• Student Research at Manastash Ridge Observatory
• Performance of the SDSS cloud scanner I: the first movie

... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

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• Space Research Institute (IKI) Seminar
• IB_MAG5 February 2000 magnetic mapping and conjugations prediction
• The Sun

... SEARCH ASP SITE: Match ALL words Match ANY word . ... The Fiery Birth of Chondrules . ... Chondrules are among the oldest objects in the solar system, dating back to the period when the Sun formed" says Anders Meibom of Stanford University, coauthor of a new paper that examines the chondrules in two chondrites to learn more about how the planets in our solar system formed. ... Lightning zaps and shock waves briefly heated isolated regions of the disk, partially melting the dust. ...

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• ASP: Monster Comet Promises Big Show
• ASP: Big Clusters, Tiny Galaxies
• ASP: Guest Observer

... Sun Image and Animation Index Additional Sun Resources . ... The Sun's outer visible layer is called the photosphere and has a temperature of 6,000њC (11,000њF). ... The corona is the outer part of the Sun's atmosphere. ... Sun's magnetic field, prominences, solar wind, aurora . ... This image of 1,500,000њC gas in the Sun's thin, outer atmosphere (corona) was taken March 13, 1996 by the Extreme Ultraviolet Imaging Telescope onboard the Solar and Heliospheric Observatory (SOHO) spacecraft. ...

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• Comet Introduction
• The Origin of the Solar System
• Venus Picture List

... 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 Blog Archive A confession from a former ?keV? junkie (2.
• SAO Summer Intern Program Projects, 2004
• Fixing and Freeing Region Markers