Astronomy Picture of the Day . The Sun Spews X-rays . ... Credit: Yohkoh Soft X-ray Telescope , ISAS , Japan Explanation: Our Sun is really very hot. The Sun's outer atmosphere is so hot that it emits much light in the X-ray band, which was unexpected. X-rays are usually emitted from objects having a temperature in the millions of degrees, not the mere thousands of degrees of the Sun's surface. The above X-ray picture shows the Sun one particularly active day in August of 1992. ...

... Science . ... Science Users Information > Science Publications > Science Announcements > Real Time Follow-up of Transient Objects From PESSTO . ... Observing Facilities . ... Observing with ESO Telescopes . ... Data Handling and Products . ... ESO Data . ... The Public ESO Spectroscopic Survey of Transient Objects ( PESSTO ) provides high-quality, time series optical and near-infrared spectroscopy of optical transients covering a broad range of luminosity, host metallicity and explosion mechanisms. ...

This page gives the name and meaning of the various parameters which can be queried in HyperLeda through SQL requests . ... real . ... actual error on t . ... log 10 of apparent major axis diameter d25 at 25 mag.arcsec -2 (d25 in 0.1') . ... actual error on logd25 . ... Apparent maximum rotation velocity of gas . ... log 10 of apparent corrected diameter (dc in 0.1') . ... total apparent corrected B-magnitude . ... total apparent corrected U-B color . ... Questions: leda@univ-lyon1.fr ...

... October 4, 1995 . The Sun Spews X-rays . Credit: Yohkoh Soft X-ray Telescope , ISAS , Japan . Explanation: Our Sun is really very hot. The Sun's outer atmosphere is so hot that it emits much light in the X-ray band, which was unexpected. X-rays are usually emitted from objects having a temperature in the millions of degrees, not the mere thousands of degrees of the Sun's surface. The above X-ray picture shows the Sun one particularly active day in August of 1992. ...

. ___________________________________________________________________ The Electronic Universe Project e-mail: nuts@moo.uoregon.edu

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

... Previous: BoF - Python in Astronomy . ... The BoF was attended by about 30 participants and a free CD of real time Linux--based upon RedHat 5.2--was available. ... Comparison tables between standard Linux and real time Linux responses to time interval generation and interrupt response latency were presented (see elsewhere in these proceedings). The present recommendations are to use RTL for UP machines running the 2.0.x kernels and RTAI for SMP machines running the 2.2.x kernel. ...

... Tonight's Sky . ... Sky this Month . ... The Sky This Week: April 1 - 10 . ... Astronomy for Kids . ... The Real Reality Show: Would aliens be anything like us? ... The Real Reality Show: All about the Drake Equation . ... The Real Reality Show . ... The Real Reality Show: Is Interstellar Travel Really Possible? ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email...

The picture above was made with this demo POV file and this pen object POV file . ... The cap and pen are separate objects; put together in their default orientation, the pen is "closed". ... The "clip" of the cap is rounded on the inside, and tapers to a point, and also tapers away from the pen, just like the real object. ... The cap is 0.18 units in diameter, the little ridge is 0.197 units in diameter, and the clip extends up to 0.26 units above the central axis. ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . ... Publications of the ASP (PASP) . ... Making Model Comets: Has it really been 20 Years? ... Colin and I had labored the past hour, trying to find the perfect combination of water, dry ice, and dirt, so that our model comet would look like a dirty snowball -- the classic description for a comet. Was it better to use hot water, cold water, or ice cubes mixed in water? ... publications . ...

... 2015 August 26 . Collinder 399: The Coat Hanger . ... Explanation: Is this coat hanger a star cluster or an asterism? This cosmic hang-up has been debated over much of last century, as astronomers wondered whether this binocular-visible object is really a physically associated open cluster or a chance projection . Chance star projections are known as asterisms , an example of which is the popular Big Dipper . ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

... The algorithm has been successfully applied to both real and simulated astronomical data (Jefferies , 1993; Jefferies 1993) and its ability to accurately preserve photometry in the observed image has been demonstrated. ... In order to investigate the algorithm's performance without the influence of detector and photon noise we took the ``truth'' data set and convolved it with the given PSF to generate a noiseless image. ... The restored object and the two restored PSF's are shown in Fig. ...

Astronomy Discussion Forums . ... What Really Exists Outside The Universe . ... Post Message | ... Picture a bowl of marbles. ... Each of the spheres in your marble bowl represents a single universe. Now in reality these marble spheres exist infinitly in numbers and are not limited to some sort of cosmic bowl. ... 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" . ...

Next: USING THE AO-CONTROL GUI Up: Spectral-Line Observing at AO Previous: STANDARDS OF REST & . This is the list of objects you wish to observe. Ideally, it should be named 'src.list' and should be placed in your project area on the data-taking computer. The format for your source list is: . name RhRmRs.s DdDmDs.s b/j velocity # Any comments you have . Name: . Your object name, usually given as one word (no spaces). ... Good target . ... Good Target . ... Lousy Target . ...

... Bad Astronomy . Misconceptions . ... Site Info . ... This page is basically a list of links to websites that either support or refute the claim that NASA never sent men to the Moon. I have my own detailed rebuttal of the Fox television program ``Conspiracy Theory: Did We Land On The Moon?'' in my Bad TV section . ... I plan on having a thorough debunking of this on this site eventually. ... Below are listed pages by both the conspiracy theorists and the debunkers. ... 2008 Phil Plait. ...

... We have measured this "redshift" for the pink black holes, and allowed for it in our calculations. ... We see this effect in the emission from gas around these pink black holes, but it is far too small an effect to account for the pinkness. Thus the swirling motions of gas around or into the black holes cannot produc the colour. ... At first we thought that these things were normal blue black holes hidden behind clouds of interstellar dust, that absorbed the blue light and made them appear pink. ...

... Armagh Planetarium . ... Universe . ... Posted on October 28, 2013 | ... Continue Reading.. ... 3 Comments New research and findings are coming to light suggesting that that we Earthlings might just all really be descended from Martians instead of€а that fell down to Earth on a [ ] . ... Posted on September 27, 2013 | ... 6 Comments So, last year I compiled a top 10 list of the best Space/Astronomy gifts which you can view by clicking here.€а I was so looking forward to receiving my Sheldon [ ] . ...

... Several HST instruments both current and decommisioned have provided imaging linear polarimetry capabilities. ... The STECF IRAF layered package impol provides five tasks specifically aimed at reduction of HST imaging polarimetry data. ... Reduction of HST polarimetry data and simulation of raw polarimetry images, together with polarization vector plotting, are covered. ... For reduction of data from imaging linear polarization instruments other than from HST, the instrument name is `SPECIAL'. ...

. Album : asv-album :: Travels to distant places and countries :: 1998/03 Tashkent (Uzbekistan) . Up . << Prev . The sun is warm. One of the first days we really felt we're in the southern country (that Spring was unusually cold). Next >> . Created with the tool album a tool by David on Tue Jun 23 14:46:30 2015 .

... The space station Mir is the most complex and unique vehicle of the twentieth century. ... It is in proposing to UNESCO the procedure of giving to the space station Mir a status of the object of the World cultural heritage of the mankind as a very valuable unique object of the technical culture of the 20th century, and realization of the special project of its preservation. ... Proactive organization work to get in UNESCO the status of the object of the World cultural heritage for the station Mir; ....