... a greenish glow is often seen in the sky, known as the "Northern Lights." ... During magnetic storms, the glow may move southwards, and on occasion it can be seen in much of the US. ... A similar phenomenon is also seen in southern polar regions. ... Auroral light is produced at a height of about 100 km (60 miles) when fast electrons, arriving from space, slam into atoms and molecules of the atmosphere. ... The green light of the aurora puzzled scientists for many years, since it fit no known...

... Apache HTTP Server Version 2.2 . ... userdir_module . ... A request for http://www.foo.com/~bob/one/two.html will be translated to: . ... http://www.foo.com/users/bob/one/two.html . ... http://www.foo.com/bob/usr/one/two.html . ... http://www.foo.com/~bob/one/two.html . ... With a request for http://www.foo.com/~bob/one/two.html, will try to find the page at ~bob/public_html/one/two.html first, then /usr/web/bob/one/two.html, and finally it will send a redirect to http://www.foo.com/bob/one/two.html...

To construct frequency distribution (histogram) of minor planets according to value of some element/ parameter/ function user should first select Elements item in menu bar and then Histogram in drop-down menu. ... User has possibility to save histogram or to print it using standard means. To save the file select File item in menu bar and then Save As... in drop-down menu. ... To print histogram select File item in menu bar and then take advantage of options Print Preview , Print Setup , Print . ...

About us . ... Telescopes . ... Apart from the 6-meter telescope BTA two small telescopes are operative at SAO: the 1-m and 0.6-m telescopes, both manufactured by Carl Zeiss, Jena, are located near the BTA. ... These telescopes are used for adjusting the equipment and techniques of observations used at the BTA. ... The observational time allocation and also a brief description of the equipment of the 1-m telescope, which is used either permanently or mainly on this telescope, are presented below. ...

SAOtng supports multiple frame buffers, so that more than one image can be loaded simultaneously. ... Users of the old SAOimage program are used to having the frame size adjust itself as each new image is loaded. ... To specify autoconfigure of frame #1, use the -autoconfig switch or the SAOTNG_AUTOCONFIG environment variable. ... When a frame size is specified manually, auto-configuration is turned off so that new images also use the specified frame size. ... Disable/Enable Autoconfig of Frame #1 . ...

... A rough estimation is that in the United States there is one planetarium per 100,000 population, ranging in size from the Hayden Planetarium's 20-meter dome seating 430 people, to three-meter inflatable portable domes where children sit on the floor. ... Together dblo associates make a huge impact in the architecture, interior design and development arena in London. ... With the holidays around the corner what better way to spoil your family than with your very own private home cinema. ...