... 24.03.2002 . ... Credit: J.P. Harrington and K.J. Borkowski ( U. Maryland ), HST , NASA Explanation: Three thousand light-years away, a dying star throws off shells of glowing gas. This image from the Hubble Space Telescope reveals the Cat's Eye Nebula to be one of the most complex planetary nebulae known. ... March 2002 . ... 2007 . ... Publications with keywords: Cat's Eye Nebula - NGC 6543 - planetary nebula . Publications with words: Cat's Eye Nebula - NGC 6543 - planetary nebula . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2011 February 18 . Planetary Nebula Project . ... Explanation: Cast off by dying sunlike stars, planetary nebulae are a brief but glorious final phase of stellar evolution. ... Shining in the cosmic night, their simple symmetries are fascinating and have inspired this planetary nebula poster project . ... About APOD | ...

... STScI-PR98-15 HUBBLE REVEALS DETAILS OF A NEWLY BORN PLANETARY NEBULA Astronomers have caught a peek at a rare moment in the final stages of a star's life: a ballooning shroud of gas cast off by a dying star flicking on its stellar light bulb. NASA's Hubble Space Telescope has captured the unveiling of the Stingray nebula (Hen-1357), the youngest known planetary nebula. ... A fast wind - material propelled outward from the hot central star -- compresses the gas and pushes the gas bubble outward. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Space Flight . ... February . ... Posted on February 24, 2012 | 4 Comments Beautiful colour images of nebulae grace astronomy books and websites and have spread to mainstream culture. ... Continue Reading.. ... No Comments On 20 February 1962, John Glenn (b1921) became the fifth human to enter space. ... 10 Comments Where does space begin? ... Posted on January 30, 2012 | ...

... Science . ... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: The binary central stars of planetary nebulae . ... Data Handling and Products . ... Science Data Products Forum . ... ESO Data . ... ESO Data Access Policy . ... ESO Science Newsletter . ... We hereby propose to further analyse several systems for which we have extensive datasets, and pursue our study of binary central stars of planetary nebulae, with an emphasis on : . ...

... GSAOI Home . ... Science . ... Despite vast increase in our understanding of the evolutionary nature of planetary nebulae (PNe) during the last three decades, a central question remains: where is the missing mass? Theoretical evolutionary tracks predict that all stars with masses in the range 1.4-8 M Sun should become PNe. ... Clearly, much of the mass of the planetary nebula shell must remain un-ionized, and much of it may be in molecular form. ... The Magellanic Cloud PNe are ideal for this. ...

While many of the PNs appear round, or elliptical as is the case for the Ring Nebula, many of them are decidedly not round: . Courtesy NASA, ESA, and the Hubble Heritage team. ... Courtesy Bruce Balick, NASA, and ESA. Both these last two PNs must have some mechanism that is shaping the gas into the long, somewhat cylindrical structures that we observe. ... I include it here just to show that indeed some of these PNs appear to be close to spherical in shape. ...

... 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) ...

... Flux density at 1 GHz (/Jy): 60? ... Notes: Has been suggested as the remnant of the SN of AD 185? ... Optical: RCW 89 is the H emitting region to the NW. X-ray: Partial shell, central nebula and pulsar and `jet'. Point sources: Radio and X-ray pulsar, with wind nebula. ... 1977, ApJ, 214, 179. ... 1981, MNRAS, 195, 89. ... X-ray observations of pulsar. ... X-ray observations of pulsar and nebulosity. ... Chandra observations of pulsar and nebula. ... X-ray observations of pulsar and nebula. ...

M1 is also known as the Crab Nebula. It is a remant of a supernova that occured in 1054 AD. The central star is actually a rotating neutron star and is called a pulsar. This exposure was taken through a narrow band H-alpha filter to make the filamentary structure stand out somewhat.

... Home Astro-Imaging Page 9 . ... AAA Fall Astronomy Class: Astronomy Basics тАУ October-November 2015 . ... This MonthтАЩs Sky тАУ April 2015 . This MonthтАЩs Sky тАУ May 2015 . This MonthтАЩs Sky тАУ June 2015 . ... 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 . ...

LAUNCHING . Rocket-Space Complex N1-L3 being . ... As a result of high-frequency vibrations in the engine №2 gas generator, a pressure reducing connector behind a turbine broke off and leakage of components occurred that caused a fire in the aft compartment and violated the engine control system operation that commanded to shut down engines at 68.7s. Despite the accident, this launch has proved the validity of the dynamic profile, launch dynamics, LV control processes using the ...

... a spiral galaxy some million light years away, made by combining images . ... 1st February using the Armagh Robotic Telescope at the Armagh Observatory. ... Image credit: Simon Jeffery. Astronomers Simon Jeffery and Jack Wright have obtained their first images of deep-space objects using a new тАЬroboticтАЭ telescope at Armagh Observatory. ... Simon Jeffery, project scientist for the new telescope, said: "After two years of hard work, it is very satisfying to see the first images looking so good. ...

Электронная библиотека астронома-любителя. ... библиотека . архив RSN . ... Ru.Space.News: . Апрель 1998 . ... Дата: 03 апреля 1998 (1998-04-03) От: Alexander Bondugin Тема: Hubble Reveals Details Of A Newly Born Planetary Nebula Привет всем! ... STScI-PR98-15 HUBBLE REVEALS DETAILS OF A NEWLY BORN PLANETARY NEBULA Astronomers have caught a peek at a rare moment in the final stages of a star's life: a ballooning shroud of gas cast off by a dying star flicking on its stellar light bulb. ...

IRAS07027$-$7934: the link between OH/IR stars and carbon-rich planetary nebulae Albert A. Zijlstra$^1$, Mike J. Gaylard$^2$, Peter te Lintel Hekkert$^3$, John Menzies$^1$, L.-\AA.\ Nyman$^4$, Hugo E. Schwarz$^4$ IRAS07027-7934, a young planetary nebula with a [WC11] central star, is found to show a strong $1612 \mhz$ OH maser, as well as weak CO emission. PAH features indicate that the ionized region is carbon-rich. ...

... IC1396 . IC1396 - The "Elephant Trunk" Nebula . ... There is a bright central star cluster, also designated IC1396, which will interfere with your ability to see the faint nebulosity while visually observing this area with a rich-field telescope. ... 9/12/2006 through 10/21/2006 . ... Ha: 7 hours of 30 minute subs . OIII: 14 hours of 30 minute subs . SII: 9 hours of 30 minute subs ...totalling 30 hours . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

. Pulkovo Observatory of Russian Academy of Sciences is situated . near Saint-Petersburg. It was founded in 1839. 196140, Saint-Petersburg, Pulkovskoye chaussee 65/1 . English version . Russian version . This page has been accessed times since May 1, 1999.

Serguei LANDO (Poncelet laboratory, Moscow): Cohomology of Hurwitz spaces . The problem of studying the intersection theory on Hurwitz spaces naturally arises in connection with the Hurwitz problem. ... The study of the intersection theory on Hurwitz spaces has been initiated in [1,4]. We discuss a new approach to the intersection theory on Hurwitz spaces. ... 3] M. E. Kazarian, S. K. Lando, {\it On intersection theory on Hurwitz spaces}, Izv. ...

. The Twin Jet Nebula (PN M2-9) is a striking example of a bipolar planetary nebula. Bipolar planetary nebulae are formed when the central object is not a single star but a binary system. Studies have shown that the nebula s size increases with time, and measurements of this rate of increase suggest that the stellar outburst that formed the lobes occurred just 1,200 years ago. ESA/Hubble NASA; Acknowledgement: Judy Schmidt

... Acker+ V/84 Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992) ============================================================================= Strasbourg-ESO Catalogue of Galactic Planetary Nebulae Acker A., Ochsenbein F., Stenholm B., Tylenda R., Marcout J., Schohn C. =1992ESOPN.. ... Optical diameter 20 A1 --- u_oDiam Uncertainty flag (:) on oDiam 22- 49 A28 --- r_oDiam References for oDiam 51 A1 --- l_rDiam Limit flag on Radio diameter 52- 57 F6.2 arcsec rDiam []? ...