... Reflection Nebula NGC 1435 . ... Reflection nebulae reflect light from a nearby star. ... The blue color typical of reflection nebula is caused by blue light being more efficiently scattered by the carbon dust than red light. ... In this picture, the seemingly familiar teardrop-shaped object just right of center is actually an unusually situated disk of gas and dust. ... Ominously foreshadowing events to come, a dark cloud of obscuring dust stands out against a luminous star field in the Milky Way. ...

Еще в разделе: (Показать все результаты (>136959) - www.astronet.ru/ )

... Conjunction Over Armagh . ... Comet and Pleiades . ... Pleiades . ... Antares Region . Helix and Cat's Eye Nebulae . Orion Nebula . Lagoon and Eagle Nebulae . Crab Nebula . ... Our Galaxy Core . Andromeda Galaxy . Wide-field and Zoomed-in Galaxies . Interacting Typhoons and Galaxies . Spiral Galaxy M106 . Sombrero Galaxy . Whirlpool Galaxy . Colliding Galaxies . ... й Miruna Popescu, Armagh Observatory ...

Еще в разделе: (Показать все результаты (>3602) - star.arm.ac.uk/ )

• More photos of the 1 December events | International Year of Astronomy in
• Featured Image | International Year of Astronomy in Ireland | Astronomy 2009
• Armagh Observatory

... We sometimes use the word "nebula" to refer to galaxies, various types of star clusters and various kinds of interstellar dust/gas clouds. ... Early in this century, there was a great debate as to the nature of the nebulae like this one which at that time could not be resolved into individual stars. ... A typical galaxy is 100,000 light-years in diameter. ... M 42 shown) Reflection nebulae are clouds of dust which are simply reflecting the light of a nearby star or stars. ... M 1 shown) . ...

Еще в разделе: (Показать все результаты (>6007) - www.sai.msu.su/ )

• APOD: 2010 December 2 - Hartley 2 Star Cluster Tour
• APOD: 2008 December 20 - Solstice at Newgrange
• APOD: December 7, 1996 - Planetary Systems Now Forming in Orion

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Telescopes and Observatories . ... The majestic star-forming region in the Lagoon Nebula. The pale ring to the right is an internal reflection in the telescope.€а (Image credit: ESO/ VPHAS+/ V. Kalari and J. Vink (Armagh Observatory) . ... The 18 component images were further processed twice. ... Venu and his colleagues use images like this to identify individual young forming stars in the Lagoon Nebula and determine their ages. ...

Еще в разделе: (Показать все результаты (>2814) - www.armaghplanet.com/ )

• stellar nursery | Astronotes
• Astronotes | Armagh Planetarium's astronomy news from across the Universe -
• Our Galaxy | Astronotes - Part 5

... Tonight's Sky . ... The Magazine . ... Star Atlas . ... An artificial comet holds secrets to Earths life . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... The planet has extreme temperature swings and perhaps active lava flows. ... A digital supplement to Astronomy magazine. ... Join TravelQuest International with Astronomy and Discover magazines on one of three great tour options surrounding this celestial spectacle . ... Astronomy Magazine . ...

Еще в разделе: (Показать все результаты (>6611) - www.astronomy.com/ )

• International Astronomical Union | Astronomy.com
• What is the difference between a planetesimal and a dwarf planet? |
• Bright planets meet at dusk | Astronomy.com

DSS input form . The SuperCOSMOS Sky Survey . ... Pi of the Sky . The Sloan Digital Sky Survey . ... Extragalactic DataBase . ... SIMBAD Astronomical Database . ... Query form . ... The Two Micron All Sky Survey. ... The NRAO VLA Sky Survey . ... NIST Atomic Spectra Database (Lines Form) . ... The UVES Paranal Observatory Project . ... Rochester Astronomy . ... European Southern Observatory . European Astronomical Society . ... Astronomical Society of the Pacific . ... Sat24 BTA on line . ...

Еще в разделе: (Показать все результаты (>745) - jet.sao.ru/ )

• http://jet.sao.ru/jet/~bars/othrlink.htm
• GRB follow-up team
• Bookmarks for Klochkova Valentina

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . This page contains brief information on recent astronomical discoveries as reported in the International Astronomical Union Circulars (IAUCs)and the Minor Planet Electronic Circulars (MPECs) . ... Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Еще в разделе: (Показать все результаты (>1222) - www.astronomy.net/ )

• International Small Telescope Cooperative, AstroGuide Listing
• Austin Astronomical Society, AstroGuide Listing
• The Astronomy Shop - Cards - by Astronomy Net

... galaxies: bulges galaxies: clusters: general galaxies: clusters: individual: . ... star formation statistics stellar content structure Cosmology ( cosmology :) cosmic background radiation ( cosmology :) cosmological parameters cosmology : miscellaneous cosmology : observations cosmology : theory ( cosmology :) dark ages, reionization, first stars ( cosmology :) dark energy ( cosmology :) dark matter ( cosmology :) diffuse radiation ( cosmology :) distance scale ( cosmology :) early Universe (...

Еще в разделе: (Показать все результаты (>227) - mavr.sao.ru/ )

... ESO, the European Southern Observatory . ... ESO's Governing Bodies . ... Travel and Contacts . Travel to ESO Headquarters . Travel to Vitacura Office . ... ESO . ... Survey Telescopes . ... Galaxy Clusters . ... Star Clusters . ... ESOcast . ... Stars@ESO . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... TRAnsiting Planets and PlanetesImals Small Telescope . ... ESO 1-metre Schmidt telescope . ... Screenshot of ESOcast 62: "Three Planets Found in Star Cluster" Credit: . ...

Еще в разделе: (Показать все результаты (>66220) - www.eso.org/ )

• Screenshot of ESOcast 62: "Three Planets Found in Star Cluster" | ESO United
• Screenshot of ESOcast 62: "Three Planets Found in Star Cluster" | ESO Australia
• Screenshot of ESOcast 62: "Three Planets Found in Star Cluster" | ESO Ireland

... U.S. statements regarding today's United Nations 62nd General Assembly declaration of 2009 as the International Year of Astronomy . J. Craig Wheeler, president of the American Astronomical Society, said, "I am thrilled that we have received official United Nations designation for the International Year of Astronomy 2009. The American Astronomical Society has been a vigorous and leading supporter of this initiative. ...

Еще в разделе: (Показать все результаты (>1674) - www.astrosociety.org/ )

• Astronomical Society
• ASP: A Good Definition of the Word "Planet": Mission Impossible?
• ASP: Astronomical Society of the Pacific Presents Pricilla and Bart Bok Awards

... The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is a conspicuous object in the night sky with a prominent place in ancient mythology . ... The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years ) away. ... Data for these stars are listed in a table below. ... Yes . ... WEBDA Pleiades cluster data . ... M45: The Pleiades Star Cluster (2007 November 18) ...

Еще в разделе: (Показать все результаты (>2499) - www.naic.edu/ )

• Catalogs and Publications
• AAS 1996 January Meeting Photo Release Images
• National Astronomy and Ionosphere Center (Arecibo Observatory)

... Satellites of the planets are assigned a provisional designation (indicating year of discovery) by the Central Bureau for Astronomical Telegrams ( CBAT ) upon satisfactory demonstration of the existence of a new object. ... In the past, Comets were first given a provisional designation, consisting of the year and a lowercase letter indicating the order of discovery in the year (e.g., 1994a was the first comet discovered or recovered in 1994, 1994b the second, etc.) ... Names .. ...

Еще в разделе: (Показать все результаты (>796) - www.iki.rssi.ru/ )

• The Wind Spacecraft
• Introduction to The Nine Planets
• International Forum dedicated to the 50th anniversary of the launch of SPUTNIK

... Ohl, R. G.; MacKenty, J. W.; Robberto, M.; Joyce, R. R.; IRMOS Team 2005, American Astronomical Society Meeting 207, #173.09 . ... An overview of the HST Treasury Program on the Orion Nebula . ... HST photometry of the Orion Nebula Cluster 2005, American Astronomical Society Meeting 207, #130.05 . Kozhurina-Platais, V.; Robberto, M.; Bergeron, L. E.; McMaster, M.; Soderblom, D.; Smith, K. 2005, American Astronomical Society Meeting 207, #130.05 . ... The HST Survey of the Orion Nebula Cluster . ...

Еще в разделе: (Показать все результаты (>12018) - www.stsci.edu/ )

• HST this week: 337
• STScI Star and Planet Formation Seminar Series
• The Orion Nebula Cluster . as a Paradigm of Star Formation

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 . ...

Еще в разделе: (Показать все результаты (>293) - zebu.uoregon.edu/ )

• Astronomy Plus CCD Images of Galaxies
• Astronomy HyperText Book
• Astronomy HyperText Book: Stellar Clusters

... Last decades alongside with realisation of six International (all-the-world) Science Olympiads ( http://olympiads.win.tue.nl/ ) on some continents were founded and began to be conducted regional international olympiads, in particular: . ... Asian-Pacific Mathematics Olympiad - since 1989. ... Last years a few organisers of the National Astronomy Olympiads in Asian countries and team leaders coming to the International Astronomy Olympiad (IAO) , stated wishes to strengthen a role of Asia. ...

Еще в разделе: (Показать все результаты (>1253) - www.issp.ac.ru/ )

• The 2 nd Asian-Pacific Astronomy Olympiad
• International Olympiad of Euro-Asian Astronomical Society
• The VIII Asian-Pacific Astronomy Olympiad, results

. [ Go back to Comet WWW site ] . Andrew A. Martis . martis @ sai.msu.ru .

Еще в разделе: (Показать все результаты (>86) - comet.sai.msu.ru/ )

• Hot links of Comet Center of SAI

EPHEMERIDES OF MINOR PLANETS . The yearbook "Ephemerides of minor planets" (published since 1948) contains information on orbital elements of numbered minor planets and the circumstances of their observations during the best observation periods. ... orbital elements of 430405 minor planets, numbered as of March 5, 2015 and dates of their oppositions in 2016; . ... opposition ephemerides of minor planets; . ... information on the "Updated Ephemerides of Minor Planets" service; . ...

Еще в разделе: (Показать все результаты (>635) - www.ipa.nw.ru/ )

• AY (preface)
• AY2006 (preface)
• Intl collabration

... Cosmology and High Energy Astrophysics (Zeldovich-90) | ... 11:2|00:35 |C.Martin |Galaxy Evolution Explorer (GALEX) | ... 11:5|00:20 |Coffee | ... polarization microwave background observations | ... 16:2|00:25 |R.Kneissl |Searching for SZ clusters | ... 17:0|00:35 |A.Vikhlinin |Baryon content of galaxy clusters and cosmology| ... CLUSTERS OF GALAXIES | ... 13:0|00:2|F.Durret |Clusters of galaxies seen in X-rays: war and | ... Clusters/Groups/Galaxies | ... black holesOptical observations of | ...

Еще в разделе: (Показать все результаты (>816) - hea.iki.rssi.ru/ )

• Zeldovich-90: COSMOLOGY AND HIGH ENERGY ASTROPHYCIS
• Zeldovich-90: COSMOLOGY AND HIGH ENERGY ASTROPHYSICS
• Second Spectrum-RG/eROSITA Conference

... Bad Astronomy . ... I think I will break from my usual format of Bad Astronomy/ Good Astronomy by saying that the way we define seasons currently is not strictly bad, but I feel (in my opinion!) that it could be better. The definition of when the seasons begin is at the moment of solstice or equinox; that is, winter (in the north) starts on December 22 nd and summer starts on June 22 nd . ... Now imagine breaking up the Sun's 46 degree up-and-down yearly swing into 1 day intervals. ...

Еще в разделе: (Показать все результаты (>491) - www.badastronomy.com/ )

• Phil Plait's Bad Astronomy: Bitesize Astronomy
• Phil Plait's Bad Astronomy: Info

... December 13, 1997 . The Coma Cluster of Galaxies . ... The Coma Cluster of Galaxies pictured is one of the densest clusters known - it contains thousands of galaxies . Each of these galaxies house billions of stars - just as our own Milky Way Galaxy does. ... In fact, the Coma Cluster is so big it takes light millions of years just to go from one side to the other! Most galaxies in Coma and other clusters are ellipticals , while most galaxies outside of clusters are spirals . ...

Еще в разделе: (Показать все результаты (>6408) - www.arcetri.astro.it/ )

• Arcetri Star-Formation Group Publications
• APOD: 2000 December 29 - The Dark Horsehead Nebula
• APOD: December 17, 1996 - Mariner's Mercury