... Users . ... Data Collection and Analysis . ... This particular part of the analysis has been disabled since the code is struggling to cope with the number of users seen this year, in particular the large contingent of people who have re-tweeted NASA. ... Order accounts: by user number (effectively random) by number of tweets (includes retweets) by number of followers by number of followers that also tweeted about AAS225 by number of friends that also tweeted about AAS225 . ... by user number . ...

... A scale which varies like this is called a logarithmic scale . Armagh Astropark's "Hyper-Cube" illustrates the concept of logarithmic scale using a series of nested cubes, each with sides ten times longer than the cube inside: . Cube 1: 8 cm. ... Just like space, time is often best represented on a logarithmic scale: we know a lot about different decades in the present century, but (to us) one decade in the Jurassic era would be much the same as any other. ... 1 AU = 150,000,000 km. ...

... 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. ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Australia Telescope Online Archive (ATOA) . ... Parkes | ... Australia Telescope 20GHz Survey . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... The Secret Inner Life of the Orion Nebula . ...

... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

... Abstract Return the value of the largest (positive) number representable in a double precision variable. Required_Reading None. Brief_I/O The function returns the value of the largest (positive) number that can be represented in a double precision variable. Detailed_Input None. Detailed_Output The function returns the value of the largest (positive) number that can be represented in a double precision variable. ... 2) Initialize a CSPICE "window." ... Link to routine source . ...

... Behemoth black hole found in an unlikely place . ... black holes . ... Observing springtime deep-sky objects with a large telescope . ... Could large numbers of black holes account for much of the "dark matter" estimated to exist in our universe? ... NASA, ESA, M.J. Jee and H. Ford (Johns Hopkins University) No, because the universe never had the raw material to grow enough black holes to account for current estimates of dark matter. Get instant access to subscriber content on Astronomy.com! ...

RELATIVE SUNSPOT NUMBERS Description of Data from SGD Explanation of Data Reports: Relative Sunspot Numbers -- The relative sunspot number is an index of the activity of the entire visible disk of the Sun. ... The provisional daily Zurich relative sunspot numbers, Rz, were based upon observations made at Zurich and its two branch stations in Arosa and Locarno and communicated by M. Waldmeier of the Swiss Federal Observatory. ... This indicates the uncertainty above and below the predicted number. ...

... Planets . ... The planets were found using the HARPS instrument on the 3.6m telescope at ESOтАЩs La Silla Observatory. ... A planet in orbit around a star causes the star to regularly move towards and away from observers on Earth. ... One newly discovered planet, HD 85512 b, is best hope found so far for a habitable exoplanet. ... The HARPS team so far have found that about 40% of stars similar to own Sun have at least one planet smaller than Saturn (which is 95 times more massive than Earth). ...

... Monitoring a region around the center of our Galaxy, astronomers have indeed found evidence for a surprisingly large number.. ... NGC 7331 and Beyond . ... Spiral galaxy NGC 7331 is often touted as an analog to our own Milky Way. ... Explosions from White Dwarf Star RS Oph . ... The International Space Station on the Horizon . ... Last week, the STS-121 crew of the Space Shuttle Discovery undocked from the International Space Station (ISS) and returned to Earth. ... Mira: The Wonderful Star . ...

Next: Participants Up: Contents Previous: Cover This volume contains the papers presented at the fourth annual conference on Astronomical Data Analysis Software and Systems (ADASS IV) which was held at the Omni Inner Harbor Hotel in Baltimore, Maryland, from the 26th through the 28th of October 1994. ... To help keep up with new trends in software as they relate to advances in astronomy, the ADASS conferences are organized around certain topics of current interest. ...

Ingredients of Life found in distant galaxy, Arecibo astronomers announce. Astronomers from Arecibo Observatory announced today at an American Astronomical Society meeting in Austin, TX, that they had found two of the basic ingredients of life in the distant galaxy Arp 220. The team used the 305-m Arecibo Radio Telescope, the world's largest and most sensitive, to observe the galaxy at a number of different frequencies. ...

Next: Proposed Facility Up: You are the Institute Previous: You are the Institute . Your main research interests lie in the very first stars and galaxies to form. Ever since those chaps at Caltech started finding large numbers of galaxies at redshifts up to about 6, the astronomical world has been in a frenzy of theoretical and observational activity. ... You, therefore, have turned your interest where nobody else has dared look: to really high redshifts. ...

When using a large number of Virtual Hosts, Apache may run out of available file descriptors (sometimes called file handles if each Virtual Host specifies different log files. ... Unix operating systems limit the number of file descriptors that may be used by a process; the limit is typically 64, and may usually be increased up to a large hard-limit. ... If you system falls into 1 or 2 (above), then increase the file descriptor limit before starting Apache, using a script like #!/bin/sh . ...

... Asteroid . ... In case you didn't hear about it, which you probably didn't: On Jan. 7, an asteroid 1,000 feet across -- nearly three times the current diameter of Marlon Brando -- barely missed the Earth, which is most likely your planet of residence. ... What if this asteroid had hit the Earth? ... As it happens, the American Astronomical Society was holding a conference in Washington AT THE VERY SAME TIME as the asteroid nearly hit the Earth. ...

... There has been a heated public discussion in the past few years about whether our ninth planet is really deserving of the name. Since Pluto orbits a star, and is much less luminous, it certainly satisfies the definition we have above. The problem is actually not with Pluto, but with a very large number of other bodies in our Solar System which also satisfy this definition, but which are not called planets. Perhaps the most notable of these is Ceres, the largest asteroid. ... Planet . ...

... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 > Virtual Hosts . ... When using a large number of Virtual Hosts, Apache may run out of available file descriptors (sometimes called file handles ) if each Virtual Host specifies different log files. ... Unix operating systems limit the number of file descriptors that may be used by a process; the limit is typically 64, and may usually be increased up to a large hard-limit. ...

... 435Snellen+ 15 GHz, and peak flux densities ranging from ~ 40 to ~ 900 mJy. Counts of GPS sources in our sample as a function of flux density have been compared with counts of large scale sources from WENSS scaled to 2 GHz, the typical peak frequency of our GPS sources. ... However, we note that the redshift distributions of GPS and large scale radio sources are different and that this hampers a direct and straightforward interpretation of the source counts. ...

Astronomy Discussion Forums . Forums: . ... How Do You Feel About Numbers? ... Post Message | ... Posted by Richard D. Stafford, Ph.D. on September 15, 2002 16:22:25 UTC . ... Wait - harvey1 - September 15, 2002 - 22:20 UTC . I don't follow you! - doctordick - September 16, 2002 - 14:59 UTC . ... 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" . ...

... Organisers: Michel Balazard (CNRS, Laboratoire Poncelet) , Xavier Caruso (CNRS, Laboratoire Poncelet) , Michael Tsfasman (CNRS, Laboratoire Poncelet, Institute for Information Transmission Problems) , Alexey Zykin (Laboratoire Poncelet, State University Higher School of Economics) . ... Number theory seminar . ... One of the goals of the semester is to convey the essential unity of the subject, especially to young mathematicians who use number theory in their research. ...