The nasa.gov site requires that JavaScripts be enabled in your browser. ... Contact NASA . ... The term "astronaut" derives from the Greek words meaning "space sailor," and refers to all who have been launched as crew members aboard NASA spacecraft bound for orbit and beyond. Since the inception of NASA's human space flight program, we have also maintained the term "astronaut" as the title for those selected to join the NASA corps of astronauts who make "space sailing" their career profession. ...

Images and text 2003 Paul Valleli . While up at Stellafane for pre-convention preparations, I spent some early morning times, experimenting with different videography setups on the 13" F/10 Schupmann at the McGregor Observatory. ... Mars was too bright and would have required neutral density filters. ... Next time, I will try 12mm and 9mm projections. ... I aquired about ten thousand frames by 3AM, at which time a breeze picked up and the seeing went to Hellas! ... 2003 Paul Valleli . ...

... StarCalc Home Page - Downloads . ... File . StarCalc (English version) . ... With minimal configuration, version 5.72 of StarCalc includes the next interfaces: "Horizon", "Horizontal coordinategrid", "Equatorial coordinate grid", "Constellation boundaries", "Constellation lines", "Constellation names", "Star proper names", "Bright Star Catalog", "Deep-sky objects", "Sun", "Moon" and "Planets and satellites" . Plugins for StarCalc . ... Interface to NGC 2000 (plugin + catalog file) . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Moon . Planets . ... Space Flight . ... A gorgeous image of the real ?Lord of the Rings? ... Saturn is a big planet, about nine times as wide as the Earth, so the rings are huge. Let me put them into scale, if Saturn and the rings were moved so that one edge of the rings touched the Earth, then the distance across the rings to the opposite edge would extend more than halfway to the Moon. ... Saturn has a lot of moons. ...

... Moscow Region ? ... Zaraysk was founded prior to 13th century, first as a part of Ryazan' principality. ... the period in the beginning of 17th century, when Russia was in chaos and the statehood was in danger ? ... Between 17th and the beginning of 19th centuries Zaraysk established itself as an important trade center, but lost its significance in the second half of 19th century, when the highway and the railroad from Moscow to Ryazan' and further South bypassed the town. ... Photo: Denis Kabanov ....

10/18/2003 1:02 PM . ... Original: 960x1280 (209k) . ... Thumbnail: 150x200 (6k) . Flash: Flash did not fire . ... Aperture: f/4 . ... Original: 960x1280 (153k) . ... Original: 1280x960 (158k) . Thumbnail: 200x150 (8k) . Flash: Flash fired . ... Original: 1280x960 (378k) . ... 11/10/2004 8:42 PM . ... Original: 396x592 (92k) . Thumbnail: 134x200 (6k) . ... Original: 396x592 (87k) . ... Original: 396x599 (69k) . Thumbnail: 132x200 (5k) . ... Thumbnail: 200x132 (5k) . ...

... Star Atlas . ... stars . ... Nuclear fusion of hydrogen into helium powers stars, but fusion requires a lot of energy. Where does this energy come from? ... You re in good company: This question also stumped the physicists who first tried to understand nuclear fusion in stars. In a star s core, all atomic nuclei have been separated from their electrons, so each hydrogen atom is really just a proton and thus holds a positive charge. ... Get instant access to subscriber content on Astronomy.com! ...

CCD Forum Message . Forums: . ... CCD Tips and Techniques | ... CCD And What's Needed?? ... Going beyond this, you need a method of keeping the scope pointing accurately at the stars (guiding), and avoiding field rotation (wedge or a derotator). ... Now there are a number of different methods of getting the light needed for guiding. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...