... Credit Copyright: Stan Honda Explanation: Beautiful, luminous decorations on this pinyon pine tree are actually bright stars in the constellation Scorpius and the faint glow of the central Milky Way. Captured in June from the north rim of the Grand Canyon of planet Earth, the shallow, close focus image has rendered pine needles on the tree branch sharp, but blurred the distant stars, their light smeared into remarkably colorful disks. Of course, temperature determines the color of a star . ...

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• Journal "Peremennye Zvezdy"
• XWare > APOD

... December 2, 1996 . Orion's Star Colors . ... Explanation : What determines a star's color? ... Red stars are cool, with temperatures of around 3,000 kelvins (K), while blue stars are hotter and can have temperatures over 30,000 degrees K. Our own lovely yellow Sun's temperature is a comforting 6,000 K. Differences in star colors are dramatically illustrated in the above photo of the constellation Orion , made using a "star trail step-focus" technique . ... About APOD . ...

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• APOD: 2009 December 24 - Gamma Cas and Friends
• APOD: 2000 December 4 - The Circinus Galaxy
• APOD: 2009 December 10 - The Colors of IC 1795

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

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• The Galaxy Gallery: Messier Objects

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. December 25, 1997 . A Hale-Bopp Holiday . ... Explanation: Seen from the Pik Terskol Observatory in the northern Caucasus mountains, comet Hale-Bopp and the bright stars of the constellation Perseus hang above the snowy, moon-lit landscape . ... Seasons Greetings and Best Wishes from APOD ! ... About APOD > . ... NASA Technical Rep.: ...

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• APOD: December 6, 1999 - M83: The Southern Pinwheel Galaxy from VLT
• APOD: December 27, 1995 - Nova Cygni 1992
• APOD: December 18, 1999 - Irregular Galaxy Sextans A

... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Starbursts are short-lived events, stars are forming so quickly that the reservoirs of interstellar gas from which stars are coalescing would be used up on a timescale much shorter than the age of the galaxy . ... Strong stellar winds from giant new stars in the starburst region combine with the blasts of supernovae to push a mighty flood of extremely hot gas, a ?superwind? from the galaxy thousands of light years into intergalactic space. ...

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• Orion, mighty hunter of the winter sky | Astronotes
• December Night Sky Wonders | Astronotes
• Wonders of the December Sky | Astronotes

Astronomy Articles . Articles | ... Moon | ... Astronomy Binoculars - The Skies The Limit - by Scott Gray, September 2006 . ... Astronomy Terms - To Help You Study The Universe - by Scott Gray, October 2006 . ... Himalia is the only moon other than Europa, Ganymeade, Callisto and IO visible with small telescopes. ... The Harvest Moon refers to the Full Moon that comes closest to the autumnal equinox, or the first day of autumn. ... Think the study of stars is best left to professional astronomers? ...

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• Astronomy articles, forums, listings, and other resources about Astronomy.
• Polish Amateur Astronomers Society - Krosno Branch, AstroGuide Listing
• Orange County Astronomers, AstroGuide Listing

... Home Astro-Imaging g3-efox8632-m82-e-600-c-35-x1-color-001-ut080815_ep1 . ... Lecture Series 2014-2015 . ... AAA Fall Astronomy Class: Astronomy Basics тАУ October-November 2015 . ... Clear Sky Chart . This Month's Sky . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

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• g3-efox8632-m82-e-600-c-35-x1-color-001-ut080815_ep1a ? Amateur Astronomers
• g3-efox8632-m81-e-600-c-35-x1-color-001-ut074841_ep1 ? Amateur Astronomers
• Amateur Astronomers Association of New York ? Amateur Astronomers Association

... V838 Mon is a member of a new class of eruptive variables which appear as a peculiar novae having late K-M type spectra in their outburst. Before its outburst, it was a wide binary system of B3V type stars. ... The B3V companion was seen in the outburst in the UV spectrum taken with HST (Rauch et al., ... In the latest spectra, the light of B3V companion was predominating in the short-wave photometric bands. ... CCD blue frames of V838 Mon before the eclipse (left) and in the eclipse (right). ...

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... 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) ...

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• M42 Color Images
• H I Midplane Poster for the 201st Meeting of the AAS, January, 2003

... In typical nightly use, the wide field and planetary telescope and cameras record images of favorably placed objects in the sky, including constellations, bright variable stars, nebulae through narrow-band filters, comets, the Moon, and planets. ... Shared Skies telescopes are available for use by students at the University of Louisville and the University of Southern Queensland, and by teachers and students in middle and high schools mentored by faculty at the universities. ...

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... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... News . ... Flight engineers: . ... Prime crew: KONDRATIEV Dmitriy Yurievich (Roscosmos, Russia), ISS-26 Flight Engineer, ISS-27 Commander, Soyuz TMA-20 Commander; NESPOLI Paolo Angelo (ESA, Italy), ISS-26/27 Flight Engineer, Soyuz TMA-20 Flight Engineer; COLEMAN Catherine Grace (NASA, USA), ISS-26/27 Flight Engineer, Soyuz TMA-20 Flight Engineer. ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

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... Bad Astronomy . ... Bitesize Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... When Venus is on the far side of the Sun, we see the entire near side lit by the Sun. ... When it is on the near side of the Sun, it shows a beautiful thin crescent, because it is between us and the Sun and we see the mostly unlit dark half. ... To see this for yourself, draw a circle one centimeter across, then, next to it, draw a circle 6 centimeters across. ... 2008 Phil Plait. ...

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• Phil Plait's Bad Astronomy: Info
• Phil Plait's Bad Astronomy: Misconceptions
• Phil Plait's Bad Astronomy: Mad Science

... This gives us another handle on how distant the stars are. ... Stars differ not only in distance, but also in apparent brightness. ... Ranking stars by brightness . ... The brightness of the star decreases as the square of the distance. ... At what distance would a 100-watt light bulb have the same brightness as the brighter stars? ... So if the distance of the 100-watt light bulb was 5 kilometers, the distance of the brighter stars would be 10,000,000,000,000 kilometers, or about a light-year. ...

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• ASP: Black Holes to Blackboards: Seeing the Light
• ASP: December's Total Lunar Eclipse
• ASP: Monster Comet Promises Big Show

... The Best sky view of the year - this afternoon, Monday 1 December 2008: look out this afternoon after the Sun sets to see the most impressive night sky view of the year! ... Triple conjunction: After the Sun sets this afternoon, Monday 1 December 2008, look towards the south: J upiter, Venus and the crescent Moon are now in a beautiful conjunction that some astronomers are calling "the best sky show of the year". ... International Year of Astronomy, Ireland National Node . ...

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• Geminid Meteors
• Armagh Observatory
• Terry Mosely Astronomy Bulletins

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... Survey Telescopes . ... Star Clusters . ... FLAMES . ... 100 Hours of Astronomy . ... IMAX€о 3D Film Hidden Universe . ... This image, the first to be released publicly from VISTA, the worldтАЩs largest survey telescope, shows the spectacular star-forming region known as the Flame Nebula, or NGC 2024, in the constellation of Orion (the Hunter) and its surroundings. ...

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• Feeding the Monster | ESO

Astronomers usually measure the flux of an object by collecting light with a telescope, sending it through a known filter, and then determining the power. ... But astronomers usually give their photometric results in terms of magnitudes. ... Astronomers define an absolute magnitude that is independent of the distance of a star and only depends on the intrinsic properties of the object: the absolute magnitude is the magnitude the star would have if it were 10 parsecs away from the Earth. ...

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• Mean astrophysical parameters from LEDA
• EXTRACT HOMOGENIZED DATA FOR A LIST OF OBJECTS
• Spectroscopy

... Centaurus A : 15,000,000 light years away, in the constellation Centaurus, the closest AG to Earth . ... Astronomers think that the reason for the unusual shape of this galaxy is because hundreds of millions of years ago two galaxies, one dusty spiral and one bright ellipictal, collided causing a massive black hole in the middle and bright emmision of light. ... Andromeda galaxy: 2.8 million light years away, closest spiral galaxy to earth, farthest object one can see without a telescope. ...

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• A matrix of tweets from #AAS221
• A matrix of tweets from #AAS223
• Chandra Images for J0454.4-6713

... The expansion is measured as a number called the Hubble Constant . ... Our value is about 20% lower than the one got with the Hubble Space Telescope in 1994," said Dr Jim Lovell, leader of the team that made the measurement. The Hubble Constant is named after American astronomer Edwin Hubble, who in the 1920s found that other galaxies were moving away from ours. ... The Hubble Constant links the galaxy's distance with its speed." ... A short run-down on the Hubble Constant: . ...

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• The 1000 Brightest HIPASS Galaxies
• I00 Our trip to Pune and Mumbai, December 1999
• Pulsar Group Main/Visitors

NGC 5986, a little-studied southern-hemisphere globular cluster, is remarkable in containing two very luminous A-F type stars, discovered by me in the 1970's. These objects are probably in their final evolution off the asymptotic giant branch. ... Determining the distance to NGC 5986 will help calibrate the absolute brightnesses of post-AGB A-F stars. ... NGC 5986: last updated 2001 December 20 . Mike Siegel and I have found a post-AGB star in the globular cluster M79 (NGC 1904). ...

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• December 2011
• Photometry with STIS
• NICMOS Data Handbook