... 2005 December 27 . IC 2118: The Witch Head Nebula . ... Explanation: Double, double toil and trouble; Fire burn, and cauldron bubble -- maybe Macbeth should have consulted the Witch Head Nebula. ... More formally known as IC 2118 , the Witch Head Nebula glows primarily by light reflected from Rigel , located just outside the top right corner of the above image . ... The blue color is caused not only by Rigel 's blue color but because the dust grains reflect blue light more efficiently than red. ...

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• APOD: 2006 December 11 - IC 2118: The Witch Head Nebula
• APOD: 2009 December 29 - Rigel and the Witch Head Nebula
• APOD: 2000 December 27 - The Dust and Ion Tails of Comet Hale Bopp

... IC 2118: The Witch Head Nebula . ... More formally known as IC 2118 , the Witch Head Nebula glows primarily by light reflected from Rigel , the bright star just left of center in the above image. ... The blue color is caused not only by Rigel 's blue color but because the dust grains reflect blue light more efficiently than red. ... Publications with keywords: IC 2118 - Witch Head Nebula - reflection nebula . Publications with words: IC 2118 - Witch Head Nebula - reflection nebula . ...

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• The Witch Head Nebula
• Rigel and the Witch Head Nebula
• XWare > APOD

... The Witch Head Nebula . ... Explanation: Double, double toil and trouble; Fire burn, and cauldron bubble -- maybe Macbeth should have consulted the Witch Head Nebula. ... More formally known as IC 2118 , the Witch Head Nebula glows primarily by light reflected from Rigel , located just outside the top right corner of the above image . ... The blue color is caused not only by Rigel's blue color but because the dust grains reflect blue light more efficiently than red. ...

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• APOD: December 6, 1999 - M83: The Southern Pinwheel Galaxy from VLT
• APOD: December 25, 1997 - A Hale Bopp Holiday
• APOD: December 18, 1999 - Irregular Galaxy Sextans A

... 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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... This meteor shower, which reaches a peak of up to 120 meteors per hour, as seen from a clear, dark site, can be observed anytime after about 10.00pm for a few nights either side of the maximum, that is from about the 12 to 16 December. The Geminid meteors, which sometimes appear as brightly coloured relatively slow-moving fireballs, are caused by small particles mostly about the size of marbles or smaller, ejected into space from the surface of the near-Earth asteroid Phaethon . ... NASA Site . ...

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• Armagh Observatory
• The Twins' Meteors, Geminid Meteors
• Terry Mosely's Bulletins

Astronotes Armagh Planetarium's Stellar Blog! ... Space Flight . ... Earth Satellites . ... Leonid meteors seen from 13 km altitude aboard an aircraft during the 1999 Leonids Multi-Instrument Aircraft Campaign (Leonid-MAC). Comet Tempel-Tuttle provides the cometary debris for the Leonid meteor shower. ... Every 17-19 November Earth crosses Tempel-TuttleтАЩs orbit and the Leonids become visible. With clear, dark skies observers may see 10 to 15 Leonid meteors every hour on those mornings. ...

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• Supernova in the Cigar Galaxy | Astronotes
• December Night Sky Wonders | Astronotes
• Stargazing in December | Astronotes

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

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• Lecture Series 2015-2016 ? Amateur Astronomers Association of New York
• Astro Imaging Workshop: Planetary Astro Imaging with a DSLR ? December 7, 2014
• bubble ? Amateur Astronomers Association of New York

... Articles | ... Forums . ... 230 deg . 49 deg . ... 130 deg . ... More Info . ... 210 deg . ... 168 deg . ... 249 deg . ... 195 deg . ... 271 deg . ... 110 deg . ... 338 deg . ... July 15 . 247 deg . ... 224 deg . ... 340 deg . ... July Phoenicids (PHE) . ... August 10 . 341 deg . ... 339 deg . ... 307 deg . ... 334 deg . ... 335 deg . ... 286 deg . ... 327 deg . ... 262 deg . ... 102 deg . ... 153 deg . ... 117 deg . ... December 2 . ... 123 deg . ... 100 deg . ... www.astronomy.net . ...

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• Articles written by astronomers for astronomers of all ages.
• American Association of Amateur Astronomers, AstroGuide Listing
• Education Discussion Forum - Hosted by The Astronomy Net

... 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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• Star Names

... 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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In autumn 1994, two groups of astronomers announced that they had discovered Cepheid variable stars in a distant cluster of galaxies. ... As the term suggests, variable stars change in brightness over time. ... Variable stars are an ideal way to get high-school students doing real science, with real data, from the real sky. ... a sky chart to find the stars . ... Students can use the nearby stars to estimate the magnitude of Delta. ... Locate the star Delta in Cepheus and estimate its brightness . ...

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• ASP: Indiana Jones and the Astronomers of Yore
• ASP: Book Review
• ASP: Accidental Astrophysics: The Devil's In the Magnitudes, Part II

... 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 Sun is our nearest star and the source of energy for life on Earth. ... For centuries astronomers wondered whether they were clouds floating in the Sun's atmosphere, but we now know that they really are huge regions of magnetic field, about as intense as the field at the poles of an iron magnet. ... Such abrupt events were named solar flares , and what made them especially interesting was that occasionally, after a prominent flare, a magnetic storm would erupt on Earth. ...

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• The Acceleration of the Aurora
• Solar Energetic Particles
• First X-Rays From a Comet Discovered

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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• Low Surface Brightness Galaxy Gallery
• ESO Press Release 06/96, 16 February 1996
• Galaxy Gallery Page III

Check out the new images (Jan 18-25) and (Jan 26-Feb 05) of the comet by Rob McNaught. ... Every few years a comet becomes bright enough to be easily seen with the naked eye but only every decade or so are these comparable with comets like Halley. ... Before Jan 13, the comet is not visible in the Australian sky after sunset. ... SOHO images . ... On Jan 12 at approximately 09:00 UT (8pm NSW time), comet C/2006 P1 McNaught appears at the 11 o'clock position in the images. ... STEREO images . ...

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• Siding Spring Survey
• Pink Black Holes: Frequently Asked Questions
• Emma Kirby

EMBARGOED UNTIL: 9:20 AM CST, January 6, 1999 CONTACT: John Biretta Space Telecsope Science Institute, Baltimore, MD (Phone: (410) 338-4917; Internet: biretta@stsci.edu) HUBBLE DETECTS FASTER-THAN-LIGHT MOTION IN GALAXY M87 Astronomers reported today discovering clouds which appear to move many times faster than the speed of light, shooting out from the region of a black hole at the center of the M87 galaxy. ... It's an illusion created by the finite speed of light and rapid motion," Biretta said. ...

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• http://www.stsci.edu/science/preprints/prep1201/prep1201.bib
• http://www.stsci.edu/documents/dhb/web/c07_focerror.fm9.html
• WFPC2 Instrument Handbook Update

... 2015 - 2016 . ... Eugene Higgins Professor of Astrophysics, Princeton University . ... December 8, 2015 . ... November 10, 2015 . ... University of the Sciences in Philadelphia author . ... Amateur Astronomer . ... 2014 - 2015 . ... June 9, 2015 . ... Digital Planetarium and the 2012 Transit of Venus from Hawaii . 2013 - 2014 . ... International Occultation Timing Association . ... 2012 - 2013 . ... 2011 - 2012 . ... Princeton University . ... Amateur Astronomers Association of Princeton, Inc., ...

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• AAAP Meeting Announcement

Seven months ago, on Mar 19, 2008, at 09:12 Moscow time, a new star appeared on the sky. The Sun had already risen over the Russia, but people of the Western hemisphere might be able to see by their eyes a faint starlet near one of Bootes constellation stars. This starlet appeared and faded by an order of magnitude in a minute. Astronomers named it GRB080319B or, informally, the Naked-Eye Burst, as it was twice as bright as human eye can see a star. ... Royal Astronomical Society . ...

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• Origin of the internal structures in HL Tauri jet (HH 151)
• Detection of unique bright radio flare of X-ray binary
• New Luminous Variable Star in M33

... Posts tagged ?Stellar association? ... I?m very curious how astronomers began to use Monte Carlo Markov Chain instead of Markov chain Monte Carlo. The more it becomes popular, the more frequently Monte Carlo Markov Chain appears. ... ArXiv] 1st week, Apr. ... Tags: Bible , big bang , FFT , IMF , microlensing , misnomer , model , NGC 602 , power law , Stellar association , wavelet . ... Comment . ... Entries RSS . ... vlk on [MADS] Parallel Coordinates . ... Entries (RSS) and Comments (RSS) . ...

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• The galaxy M100
• The AstroStat Slog 2007 December
• Chandra Supernova Remnants Catalog - Instrumental Artifacts

... Tonight's Sky . ... Astronomy for Kids . ... Two meteor showers put on shows this December . ... And a second shower under moonless skies December 22/23 offers an additional treat this month. ... The Ursid meteor shower peaks under a dark sky before dawn December 23. ... One of the yearт??s most prolific meteor showers makes its appearance in mid-December. ... StarDome: Locate the constellations Gemini and Ursa Minor in your night sky before this meteor shower with our interactive star chart . ...

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• Jupiter brightens the December sky | Astronomy.com
• The Sky this Week: December 25, 2015т??January 10, 2016 | Astronomy.com
• Why do aurorae appear strongest within rings centered on Earth's poles instead