... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

The command list is placed between single quotes, as the command line is scanned twice, once when the shell first encounters the trap command and again when it is being executed. trap ' command-list ' signal-list . ... If command-list is not specified, then the action taken on receipt of any signal in the signal-list is reset to the default system action. If command-list is an explicitly quoted null command (' ' or " "), then the signals in signal-list are ignored by the shell. ...

... XLVIII International Mathematics Olympiad, Hanoi (Vietnam), July. XXXVIII International Physics Olympiad, Isfahan (Iran), July. XXXIX International Chemistry Olympiad, Moscow (Russia), July. ... XII International Astronomy Olympiad, Simeiz (Crimea), September-October. V International Linguistic Olympiad, St.Petersburg (Russia), July-August. ... XIV Olympiad "Tuymaada" (matematics, physics, chemistry, informatics), Yakutsk (Siberia, Russia), July. ...

grdcut - Extract a subregion out of a . grd file grdcut input _ file . grd -G output _ file . grd -R west / east / south / north [ r ] [ -V ] grdcut will produce a new output _ file . grd file which is a subregion of input _ file . ... The subregion is specified with -R west / east / south / north as in other programs; the specified range must not exceed the range of input _ file . ... grd this is the input . grd format file. G output _ file . grd this is the output . ...

... Each year a few long-period comets, with orbital periods typically a million years, arrive in the planetary system. ... There should be about 5,000 such objects over 10km across, and perhaps 50,000 over a kilometre across. ... However Bill Napier, and Chandra and Janaki Wickramasinghe at Cardiff University, have shown that this explanation doesn't work: the dust so created would yield many strong annual meteor streams without parent comets, and these are not observed. ...

... Triangle Service Station, Seaford, Virginia (Summer 1954) York Air Conditioner, Warwick, Virginia (Summer 1955) Colonial National Park, Yorktown, Virginia (Summer 1956) NACA Langley Aeronautical Laboratory, Hampton, Virginia Math Aid, Structural Dynamic Section, High Temperature Branch , Pilotless Aircraft Research Division (1957-1958) Research Engineer , Analysis and Computation Branch , Structures Research Division , ... B. Johnson Space Center, Houston, TX. ...

When entering Plates section user should open the file with information on moments of observations, plate centers, angular dimensions of sky regions covered by plates and numbers of observatories (the file can be created for the first time or can be prepared according to bellow described format in advance). ... It is supposed that the position of plate center and half-dimensions of plate are specified in right ascension and declination (the edge of rectangular plate is oriented to the equator). ...

... Several HTML elements, most notably the A element , may contain an attribute which takes a URL as value. URLs, Uniform Resource Locators, are addresses of Web documents. More generally, URLs can be used on the Web to refer to "objects" on the Web or in other information systems. ... http . a Web document (to be accessed using Hypertext Transfer Protocol, HTTP ) . ... file . ... In particular, the specifications say that within a URL only a limited set of characters can be used as such : . ...

When Apache starts, it connects to some port and address on the local machine and waits for incoming requests. By default, it listens to all addresses on the machine, and to the port as specified by the Port directive in the server configuration. ... There are two directives used to restrict or specify which addresses and ports Apache listens to. ... Listen can be used to make a single Apache server listen to more than one address and/or port. ... Syntax: Listen [ port | IP-address:port ] . ...

... Sighting the telescope, first at the tree and then at pole B, you measure the angle A of the triangle ABC, equal to the difference between the numbers you have read from the azimuth plate.. ... Why triangles? ... One large surveying project of the 1800s was the " Great Trigonometric Survey " of British India. ... Everest was the one who commisioned and first used those giant theodolites; they are now on display in the Museum of the Survey of India in Dehra Dum. ... Everest . ...

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Despite many decades of progress in understanding the evolution of star formation and stellar populations in galaxies, we have still fundamental questions that have remained unanswered. These include: how do stars cluster in galaxies, and how do these structures evolve in time? ... How are popular star formation rate indicators affected by the recent star formation history of a galaxy? ... The answers to these questions inform our theories for the evolution of galaxies through cosmic times. ...

. This image of Titan's surface has been colored using reflection spectra data to suggest the actual colour of the moon's surface. Pebble-size rock or ice blocks are strewn across the surface. The two large objects just below the middle of the image are about 6 inches (15 centimeters, at left) and 1.6 inches (4 cm, center) across, respectively. They lie about 33 inches (85 cm) from Huygens. ESA/NASA/JPL/University of Arizona

... Bad Astronomy . ... Every few months, one of a series of questions comes up on the USENET group sci.astro involving tides, or the rotation of the Moon, or the recession of the Moon from the Earth. ... Why the Moon's rotation period is the same as the length of time it takes to orbit the Earth (same as number 1, but phrased differently). ... But when this happens, the time it takes for the Earth to rotate once will be slowed to exactly the same time it takes for the Moon to go around the Earth once! ...

. Figure 3. Dark dimmings and bright post-eruption arcades in solar sources of the severest FDs over the solar cycle 23 in SOHO/EIT 195 е fixed-base difference images. The FD magnitude of the strongest disturbances and the dates and time of their registration are specified in the upper right corner of each panel. The dates and time of EIT images subjected to the subtraction are specified at the bottom of each panel.

... Recognition of Anomalous Events S. Monai 1,2 and F.Pasian 2 1 Osservatorio Astronomico di Brera Merate, Italy 2 Osservatorio Astronomico di Trieste, Italy Abstract. We present an original algorithm for the recognition of anomalous events in a CCD frame (i.e., cosmic hits, bad pixels etc.) ... Raw images, as read from a CCD, are often a#ected by some events which are revealed by anomalous pixel values, i.e., single saturated pixels or pixels at zero intensity (also named hot or bad pixels). ...

... 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 [ ]...

... FOR THE MIR SERVICE LIFE CHARACTERISTICS . ... The station operated nearly 3 times as long (its service life reached more than 15 years). ... Below are given the actual operating periods of the Modules as part of the Orbital Complex (as of December 31, 2000). ... Most of the onboard systems have significantly exceeded service life characteristics specified in the log books for assemblies, instruments, units and systems as a whole. ... Official WEB-site of S.P.Korolev RSC Energia . ...

Pulkovo NEO Page . ... EPOS Software Package . ... EPOS ( E phemeris P rogram for O bjects of the S olar system) is the Windows PC application for study and ephemeris support of observations of the Solar system objects. ... It controls the part of common data and transfers the control to one of the programs that solve the restricted set of tasks. ... So with the EPOS software package one can calculate the accurate ephemerides for many objects and get the quick illustration of their motion as well. ...

This is to help you migrate from Mail::Bulkmail 2.x to Mail::Bulkmail 3.x change use Mail::Bulkmail 2.05 to use Mail::Bulkmail 3.03 "/path/to/conf/file"; change $bulk->allow_duplicates(1); to $bulk->Trusting('duplicates' => 1) (should be in the conf file as Trusting @= duplicates) change $bulk->safe_banned(1) to $bulk->Trusting('banned' => 0); (should just not be specified, since it defaults to 0. ... Headers from message (HFM) is no longer supported. ...