... LL Orionis: When Cosmic Winds Collide . ... Credit Copyright: Hubble Heritage Team ( AURA / STScI ), C. R. O'Dell ( Vanderbilt ), NASA Explanation: This arcing, graceful structure is actually a bow shock about half a light-year across, created as the wind from young star LL Orionis collides with the Orion Nebula flow. ... Publications with keywords: Orion Nebula - stellar wind - bow shock . Publications with words: Orion Nebula - stellar wind - bow shock . ... LL Ori and the Orion Nebula . ...

... 2003 November 15 . LL Orionis: When Cosmic Winds Collide . ... Explanation: This arcing, graceful structure is actually a bow shock about half a light-year across, created as the wind from young star LL Orionis collides with the Orion Nebula flow. Adrift in Orion's stellar nursery and still in its formative years, variable star LL Orionis produces a wind more energetic than the wind from our own middle-aged sun. ... About APOD | ... NASA Web Site Statements, Warnings, and Disclaimers . ...

... Armagh Planetarium . ... Universe . ... Posted on March 18, 2011 | ... Continue Reading.. ... 11 Comments тАЬIs there life on Mars?тАЭ This must be one of the most-asked questions in astronomy. €аIn this article I am going to look at the historical background to this question. ... Posted on February 28, 2011 | ... 170 Comments Apollo 18 is a SF/Horror movie presented as newly-found film footage taken by the fictional crew of a lost 1970s lunar landing mission.€а The Apollo 18 film uses real NASA [ ]...

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." ...

... 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. ...

... STScI-PRC95-11 FOR RELEASE: February 20, 1995 HUBBLE'S CLOSE-UP VIEW OF A SHOCKWAVE FROM A STELLAR EXPLOSION This image shows a small portion of a nebula called the "Cygnus Loop." ... Blue shows emission from "doubly ionized" oxygen atoms (atoms that have had two electrons stripped away) produced by the heat behind the shock front. ... This sulfur emission arises well behind the shock front, in gas that has had a chance to cool since the passage of the shock. ...

Astronomy Discussion Forums . ... Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... New Model: How Do The Sun And Moon Appear To Move Across The Sky . ... Post Message | ... focused on the Sun and the Moon as they appear from the given location of the Earth surface: . ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... WFPC2 ISR 95-03 . ... Data . ... WFPC2 Home . ... Figure 5 shows that in most cases where two subexposures have been taken, performing the standard cosmic ray removal procedures removes the majority of the tails. ... Cases where real objects cross the bad column, such as the object just above 2-637 in Figure 5, . ... The same region as shown in Figure 1, but after cosmic ray removal. ... c1h (data quality) image which is included on the data tape, and the STSDAS task wfixup or the IRAF task fixpix ....

... 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...

... With the Moon's terminator moving almost 10 mph (16 km/h) across its equator, how long would it take for an observer using binoculars to notice a change in lunar features? ... The lunar terminator, the sunset/sunrise line that sweeps across the Moon s surface as the Moon orbits Earth, travels at a rate of 9.6 mph (15.4 km/h) along our satellite s equator. ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ...

Astronomy suffers from the `Static Illusion' - because astronomical changes usually occur over intervals much longer than a human lifetime they appear static. This illusion affects our understanding of how astronomical objects work. ... Observations at the 1/10th arcsecond level with HST and near-infrared adaptive optics on ground based telescopes are beginning to create movies of `astronomy in motion'. ... Proto-star HH-30 expanding jet HST.. Young binary, XZ Tau, expanding `bubbles' HST.. ...

... This beautiful new image shows a glowing cloud of cosmic dust (called a nebula) sitting boldly against a backdrop of shining stars. To the naked eye, thick clouds like these appear empty and dark, but some are actually home to the brightest nebulae and hottest young stars in the Universe! Stars are made of gas, so it is no surprise that they are born inside thick gassy clouds. But the clouds that give birth to stars also block our view of them growing within. ...

... The European HST Archive has been moved to ESA's European Space Astronomy Centre ( ESAC ), Spain, where most of ESA's Space Science Archives are located and operated from. ... The Space Telescope European Coordinating Facility (ST-ECF), jointly operated by ESA and the European Southern Observatory ( ESO ) was, until the end of 2010, the European HST science facility, supporting the European astronomy community in exploiting the research opportunities provided by the Hubble Space Telescope. ...

The Doppler shift is the effect of sound increasing or decreasing in pitch as an object moves towards or away from you. ... Light works the same way, except light is shifted to redder colours when an object is moving away, and to blue colours when an object is travelling towards us. ... Almost every object he observed had its light stretched to redder colours, indicating essentially everything in the Universe was moving away from us. ... So the Hubble constant tells us how old the Universe is. ...

These are very prominent absorption lines is most all galaxies. ... These pair of absorption lines will appear in all the spectra and they should be your principle source for determining the redshift. ... When this applet opens you will see an iconic representation of galaxies in the left hand side of the applet and a target area in the right side of the applet. ... Note: What you are doing in this excercise is identical to what Hubble did in the 1920's and you are using the same galaxies. ...

... SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . ... Accidental Astrophysics: The Devil's In the Magnitudes, Part II . ... The star second to the Sun in brilliance is Sirius. ... Recall the magnitude system, passed down to us through a hundred generations of sky watchers, as a means of quantifying stellar brightness ("Accidental Astrophysics," May/June, p. 9). ... Yes, it is a magnitude difference, but that difference is due to the distance between us and the star. ...

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) . ...

... 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). ...

... 2011: . Detection of galaxies with large peculiar velocities . ... New galaxies with polar rings . ... The new catalog contains 275 galaxies. ... Radio galaxy RC J0311+0507, a unique object of the early Universe . ... The estimation of the stellar population age in the host galaxy via the multicolor photometry (BTA) and new infrared data (UKIRT, 2011), amounting to 0.8 Gyr results in the moment of its formation when the universe was about 0.5 milliard years old (z~10). ... Archive . ...

... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... SUBJECT: 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... which will be held in Beijing, P.R. China, from August 25-29, 2014, hosted by Chinese Academy of Sciences . ... China), . ... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. ...