... This cosmic expanse of dust, gas, and stars covers close to 3 degrees on the sky in the heroic constellation Perseus. ... What is this strange object? First discovered on ground based LINEAR images on January 6, the object appeared unusual enough to investigate further with the Hubble Space Telescope last week. ... Mars and a Colorful Lunar Fog Bow . ... Shepherd Moon Prometheus from Cassini . ... Mars is at opposition tonight, opposite the Sun in planet Earth's sky. ... Tethys Behind Titan . ...

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... 2008 February 26 . Mysterious Acid Haze on Venus . ... Explanation: Why did an acidic haze spread across Venus? The unusual clouds were discovered last July by ESA 's robotic Venus Express spacecraft currently orbiting Venus . ... There, sunlight broke these molecules apart and some of them recombined into the volatile sulfuric acid . Over the course of just a few days last July, the smooth acidic clouds spread from the South Pole of Venus across half the planet. ... About APOD | ...

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• APOD: 2006 February 27 - GRB 060218: A Mysterious Transient
• APOD: 2007 February 21 - Mira Over Germany
• APOD: 2009 February 27 - Lulin and Saturn near Opposition

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. February 9, 1999 . A Supernova Star-Field . Credit: Hubble Heritage Team ( AURA / STScI / NASA ) . Explanation: Bright stars don't last forever. ... The above picture is a composite of recent images taken over several years. The explosion originated from a bright massive star that ran out of nuclear fuel . ... About APOD > . ...

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• APOD: 2000 February 28 - The Sombrero Galaxy from VLT
• APOD: February 22, 1999 - NGC 1316: After Galaxies Collide
• Astronomy Picture of the Day

Astronotes Armagh Planetarium's Stellar Blog! ... Moon . Planets . ... Monthly Sky Notes . ... February . ... The ringed planet will be quite bright, but unlike Jupiter it will not be the brightest point of light in the sky, this accolade will return to Sirius which is the brightest star in our night sky in the constellation of Canis Major. ... Seven days later on February 18, the Moon will be in its full Moon phase. ... Tweets that mention Wonders of the February Night Sky | ... Astronotes . ...

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• constellations | Astronotes - Part 6
• constellations | Astronotes - Part 5
• constellations | Astronotes - Part 3

... 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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• Brightest Northern Hemisphere Galaxy - an Astronomy Net Education Forum Message
• You Can Make Stellar Images Brighter - an Astronomy Net Article
• Help Please - an Astronomy Net Eyepieces Forum Message

... See the exerpt below from AAVSO circular, courtesy of Martin McKenna. ... The attached map shows the approximate position, as seen from Cork, at 06.00 on 18 Feb. ... Discovered Independently by: - Yuji Nakamura, Kameyama, Mie, Japan (reported by H. Yamaoka, Kyushu University, IAU Circular 8803); - Yukio Sakurai, Mito, Ibaraki-ken, Japan (reported by S. Nakano, Sumoto, Japan, IAU Circular 8803) Discovery Date: - Nakamura: Feb. 4.8624 UT - Sakurai: Feb. ... Clear skies, Terry Moseley . ...

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• Armagh Observatory Geminid Meteors
• Armagh Observatory
• Hale-Bopp Finding Chart 1

We report on recent observations of molecular clouds in the tidal Magellanic Bridge; specifically, the Ы?kpc-long, tidally extended "tail" of the Small Magellanic Cloud. In particular, we identify an unusually high 12CO(3-2)/12CO(1-0) ratio of 2-3 to 1, toward one of the clouds, suggesting a warm and dense molecular material associated with imminent or current formation of stars. ...

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• Dust in the bright supernova remnant N49 in the LMC
• Initial Hypotheses
• STAN - February 1999

Have you ever heard the name of a star or constellation and wondered what it meant? ... I've compiled a table of commonly known star names and their definitions in the Western tradition, grouped by constellation. ... Following each constellation entry are any named stars found therein (in order from brightest to faintest), listing the Bayer (Greek letter) or other common designation, the star name, and English translation. ... Some other sites with star name information: . ...

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• The Pleiades
• Pulsar Highlights - ALFA Finds Youngest Binary Pulsar Ever
• HISA Science Overview

... Home Education Classes AAA Spring Astronomy Class: The Physics of Astronomy тАУ February ? March 2016 . ... Classes . ... AAA Spring Astronomy Class: The Physics of Astronomy тАУ February - March 2016 . ... This MonthтАЩs Sky тАУ March 2016 . ... 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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• This MonthтАЩs Sky тАУ February 2016 ? Amateur Astronomers Association of New
• Astronomy Workshop: Observing Variable Stars from the City ? February 15, 2015

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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• ESO Press Release 06/96, 16 February 1996
• U of O High Energy Physics Seminars

... Seminar archive . ... Seminar archive 2014 7 February . ... Сверхъяркие сверхновые и их механизмы излучения (Superluminous Supernovae and their Emission Mechanisms) . ... Случайное блуждание фотонов в релятивистском потоке: приложение к гамма-всплескам (Random walk of photons in relativistic flow and its application to gamma-ray burst) . ... In the relativistic flow, it has different behavior from the one in the non-relativistic flow due to the relativistic beaming effect. ... All seminars: . ...

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... 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 constellation of tweets from #AAS221
• The AstroStat Slog 2007 February
• A matrix of tweets from #AAS221

.

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• The bright star clusters Messier 47 and Messier 46 in the constellation of
• The unusual binary star V471 Tauri in the constellation of Taurus | ESO
• The bright star cluster Messier 7 in the constellation of Scorpius | ESO

... Paul Bennie pbe@star.le.ac.uk Friday, 16 February 2001 XMM EPIC MOS MOS-2 pixels. ... Paul Bennie pbe@star.le.ac.uk Friday, 16 February 2001 The defect seem to be most quick CCDs 1, 2 XMM EPIC MOS MOS-1 pixels. ... Paul Bennie pbe@star.le.ac.uk Friday, 16 February 2001 XMM EPIC MOS New Defects in rev. 108 flare. XMM EPIC MOS Paul Bennie pbe@star.le.ac.uk Friday, 16 February 2001 New Defects in rev. 169 flare. ... Paul Bennie pbe@star.le.ac.uk Friday, 16 February 2001 XMM EPIC MOS ...

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• http://xmm.vilspa.esa.es/calibration/documentation/epic_cal_meetings/200102/Open_points-NCR-F_Giannini.pdf
• Analysis of very bright sources
• Correction of the energy scale in specific pixels

... Main . ... Pulsar Emission Mechanisms . ... Distinguished Visitor . PPTA algorithm development . ... Flux variations of PPTA pulsars . Carolyn Raithel (Carleton College) . ... Pulsar Wind Nebluae . ... Nov 1, 2010 - Jan 31, 2011 . ... June 23 - Aug 9, 2010 . ... Dec 8 - 17, 2009 . ... Dec 13 - 23, 2006 . ... Dec 3, 2006 - Jan 5, 2007 . ... Aug 10 - Dec 7, 2006 . ... June 29, 2006 - June 15, 2007 . ... May 15 - June 26, 2006 . ... Dec 31, 2005 - Feb 1, 2006 . ... Group . ... Pulsar Groups . ...

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• HIPASS Science meeting
• ATNF Daily Astronomy Picture
• SMS2014 Accommodation

... These reports are submitted for engineering work accomplished during bright time and maintenance shutdowns. ... 010531: May 2001 Bright Time Engineering Work Summary . ... 020102: January 2002 Bright Time Engineering Work Summary . 020202: February 2002 Bright Time Engineering Work Summary . ... 030101: January 2003 Bright Time Engineering Work Summary . ... 040101: January 2004 Bright Time Engineering Work Summary . ... 050101: January 2005 Bright Time Engineering Work Summary . ...

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. Please standby and you will be automatically connected to the new location of the unframed Supernova page. Or, click on the link above. If you have questions or problems, please email me at David Bishop dbishop@vhdl.org . Last modified: Mon Aug 27 12:40:15 EDT 2001

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• Supernova 1998eg in UGC 12133
• Supernova images - Best of
• Supernova 1999cw in MCG -01-02-001

... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

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• Galaxy sector, archive 2009
• Metagalaxy sector, archive 2012

... This limited extent suggests that the currents which disturb the field flow somewhere nearby, probably near the auroral arcs. ... Any electric current, however, must flow in a closed circuit, and since it seemed to be caused (like that of the aurora) by processes taking place in distant space, Birkeland proposed that it came down from space at one end of the arc and returned to space at the other end. ... The electric energy needed to drive the current is taken from the motion, which is slowed down....

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• The Path of the Sun, the Ecliptic
• Pluto and Charon
• Close-up of the Aurora

... Bad Astronomy . ... Bad Astronomy: The North Star, Polaris, is a very bright star. Good Astronomy: Polaris is a middling-bright star, easily missed. ... He said it was close to Polaris, the North Star, but he also said it was in the East. ... It's natural, I suppose, to think that such an important star should be bright, but really, that's a conceit, like thinking that the Earth is at the center of the Universe. If more people knew just why Polaris is the North Star, this Bad Idea would stop. ...

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• Phil Plait's Bad Astronomy: Bad TV
• Phil Plait's Bad Astronomy: Bad News
• Phil Plait's Bad Astronomy: Bitesize Astronomy