... August 28, 1996 . NGC 5882: A Small Planetary Nebula . ... Pictured above is the planetary nebula NGC 5882, captured by the Hubble Space Telescope . Although planetary nebulae can appear similar to planets like Uranus and Neptune , they are actually gas clouds surrounding stars typically hundreds of light years away. Planetary nebula form when a typical star completes fusion in its core and ejects an outer envelope of gas - usually about 10 percent of the star's initial mass. ...

Astronomy Picture of the Day . ... 4.07.2004 . ... Hubble Heritage Team ( STScI / AURA ), NASA Explanation: Except for the rings of Saturn , the Ring Nebula (M57) is probably the most famous celestial band. This planetary nebula's simple, graceful appearance is thought to be due to perspective -- our view from planet Earth looking straight into what is actually a barrel-shaped cloud of gas shrugged off by a dying central star. ... Publications with keywords: M57 - Ring Nebula - planetary nebula . ...

... STScI-PRC97-38a HUBBLE SEES SUPERSONIC EXHAUST FROM NEBULA M2-9 is a striking example of a "butterfly" or a bipolar planetary nebula. Another more revealing name might be the "Twin Jet Nebula." If the nebula is sliced across the star, each side of it appears much like a pair of exhausts from jet engines. ... The central star in M2-9 is known to be one of a very close pair which orbit one another at perilously close distances. ... M2-9 is 2,100 light-years away in the constellation Ophiucus. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Space Flight . ... Tides of light: M8 in spectacular detail (Image credit: NASA/ESA) . ... Spectacular! ... What else can I say about this stunning Turneresque image of the Lagoon Nebula (M8)? ... This is of course illusory.€а This is a false colour image: light from glowing hydrogen is shown as red, light from ionised nitrogen appears as green and light which passed through a yellow filter is coloured blue. ... Astronotes . ...

... 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. ...

... Circumstellar disc of beta Pictoris: constraints on grain properties from polarization. To appear in the Astronomy & Astrophysics . abs , src , ps ] . ... Dust influx to Titan from Hyperion . ... abs ] . ... Characteristics of bulges and disks in interacting galaxies . ... Dust grains around Herbig Ae/Be stars: porous, cometary-like grains? ... To appear in the Astronomy & Astrophysics Supplement . ... Finally, Links may lead you to more options (e.g. via the LANL preprint system). ...

Our publications in 2007 year Pustilnik, S. A.; Tepliakova, A. L.; Kniazev, A. Y.; Burenkov, A. N.; SAO; Russia; SAAO; Africa, South . eprint arXiv:0712.4205, submitted to Astrophysical Bulletin (SAO) (12/2007) . Pustilnik, S. A.; Tepliakova, A. L.; Kniazev, A. Y. eprint arXiv:0712.4007, submitted to Astron.Lett (12/2007) . ... Kniazev, A. Y.; Pustilnik, S. A.; Zucker, D. B. eprint arXiv:0707.4285, submitted to MNRAS (07/2007) . ... eprint arXiv:0707.4288 (07/2007) . ...

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. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . ... Parkes | ... Radio Observations of the Hubble Deep Field South - a New Class of Radio-Luminous Galaxies? ... Radio Observations of the Hubble Deep Field South . ... Radio Observations of the Hubble Deep Field South Region I: Survey description and initial results for HDF-S sources . ... Radio Observations of the Hubble Deep Field South Region II: The 1.4 GHz Catalogue and Source Counts...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . ... IAU Publications . ... Publications of the ASP (PASP) . ... Mercury Magazine Contents . ... July/August 1996 . ... By Doppler shifts, by interferometry, by photometry -- the hunt to find planets around other stars is on, and amateur astronomers may soon be taking a leading role. ... Last May, the Space Telescope Science Institute canceled the Hubble amateur program for lack of interest. ...

Next: Public Understanding of Science, Up: Technical Research Summaries Previous: New Approaches to Risk . ... Michael Smith has been analysing new infrared data collected from 11 PPN and PN by Chris Davis (Joint Astronomy Centre, Hawaii) to search for clues as to how the objects evolve. ... Georgi Pavlovski studied the properties of supersonic turbulence in molecular clouds and its effect on the molecular cloud properties and their chemical evolution. ...

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 . ...

... Tonight's Sky . ... Observing . ... Hubble sees Uranus' rings on edge . NASA's Hubble Space Telescope captured a rare view edge-on of Uranus' rings. ... Uranus' edge-on rings appear as spikes above and below the planet. ... T his series of images from NASA's Hubble Space Telescope shows how the ring system around the distant planet Uranus appears at ever more oblique (shallower) tilts as viewed from Earth culminating in the rings being seen edge-on in three observing opportunities in 2007. ...

... The blue bubble is a planetary nebula known as Abell 33. Planetary nebulae are created when an aging star blows away its outer layers of gas in a gigantic cosmic bubble. ... Creating the illusion of the cosmic diamond is a bright star along the rim of the nebula. ... The star is about 700 light years away, that is halfway between Earth and the nebula. ... At the centre of the ring, you can see the remains of the star that created this planetary nebula, now a white dwarf . ...

Title: A Dark-Matter Spike at the Galactic Center? Authors: Piero Ullio , HongSheng Zhao , Marc Kamionkowski . ... Title: The Galaxy Environment of Quasars in the Clowes-Campusano Large Quasar Group at z~1.3 . ... Title: The Galaxy Environment of a Quasar at z=1.226: A Possible Cluster Merger . ... 16 matches for the search pattern galaxy environment . The URL for this page is: http://xxx.itep.ru/find/astro-ph/1/galaxy+environment/0/1/0/past,all/0/0 www-admin@xxx.lanl.gov ...

http://hubblesite.org/newscenter/archive/releases/1996/22/text/ Probing the mysterious heart of the Crab Nebula, the tattered remains of a stellar cataclysm witnessed more than 900 years ago, astronomers using NASA's Hubble Space Telescope have found that the Crab is even more dynamic than previously understood, based on a cosmic "movie" assembled from a series of Hubble observations. ... Because of this flickering, the neutron star is also called a "pulsar." ...

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... Today this year's largest group of sunspots will cross the Sun's central meridian. ... The next day, the number of spots in the group reached five, and the day after, on June 2nd, it was possible to count thirteen sunspots on solar disk, which had been clear prior to this. ... This year's two most powerful active areas, which passed across the solar disk at the beginning of May, 2009, are set to appear in the Sun's eastern sector in two days, on June 6th. ...

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