Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . Colin Johnston . ... Space Flight . Human Exploration . Robot Exploration . ... Science Fiction . ... Thanks to extensive training and consummate professionalism, the two astronauts successfully and without a fuss fixed the problem . ... Article by Colin Johnston, Science Communicator) . ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

I/146 Positions and Proper Motions (Roeser+ 1988) ================================================================================ Catalogue of Positions and Proper Motions Roeser S., Bastian U. =1988A .. ... 449R ================================================================================ ADC_Keywords: Positional data; Proper motions Description: PPM North gives J2000 positions and proper motions of 181,731 stars north of -2.5 degrees declination. ... The mean epoch is near 1931. ...

Trailing Planets . ... Of course these planets, Mercury , Venus , Mars , Jupiter , and Saturn all still dazzle in western skies near sunset, but sky gazers who want to see Mercury should look soon. Mercury starts the evening closest to the horizon - visible here above the wide bright trail left by Venus - and in the coming days Mercury will be the first to leave the evening sky entirely as it moves closer to the setting Sun. ... NASA Web Site Statements, Warnings, and Disclaimers . ...

... The greater the distance, the smaller the parallax. ... That triangle has the same proportions as the much larger triangle ABC, and therefore, if the distance B'C to the thumb is 10 times the distance A'B' between the eyes, the distance AC to the far landmark is also 10 times the distance AB. ... The most distant objects our eyes can see are the stars, and they are very far indeed: light which moves at 300,000 kilometers (186,000 miles) per second, would take years, often many years, to reach them. ...

... Apache HTTP Server Version 2.4 . Apache > HTTP Server > Documentation > Version 2.4 > Programs . ... htcacheclean is used to keep the size of mod_cache_disk 's storage within a given size limit, or limit on inodes in use. ... If one or more URLs are specified, each URL will be deleted from the cache, if present. ... Specify limit as the total disk cache size limit. ... By passing the -a or -A options to htcacheclean , the URLs within the cache will be listed as they are found, one URL per line. ...

... click image to view discuss) . ... This is a quick shot of the near-Earth asteroid 2005 YU55 using four consecutive exposures from the Harvard MicroObservatory robotic telescope in Amado, Arizona, on the night of Nov. ... 10, 2015 . This is Comet Lovejoy C/2014 Q2 as it appeared at about 10:30 pm Saturday, Jan. 10, 2015, from my back yard in Belmont, MA, about 5 miles west of downtown Boston. ... Main image: 0.6 second exposure. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... The previous example, Chapter 12, "Expanding Colored Squares Example," illustrates how to expand and contract the clipping region of a layer without changing the wrapping width of the layer. This example illustrates how to capture mouse events so that the user can make a layer's wrapping width wider or narrower by dragging the mouse. ... how to capture mouse events for a layer . how to change the wrapping width of a layer by using the load() function . ... Capturing Events for the Layer . ...

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