International Space Station (ISS) |
International Space Station (ISS) |
Dec 12 2005, 10:33 PM
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Senior Member Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 |
Review of NASA Plans for the International Space Station
Review of NASA Strategic Roadmaps: Space Station Panel, National Research Council 80 pages (approximate), 8 1/2 x 11, 2005 In January 2004, President Bush announced a new space policy directed at human and robotic exploration of space. In June 2004, the President s Commission on Implementation of United States Space Exploration Policy issued a report recommending among other things that NASA ask the National Research Council (NRC) to reevaluate space science priorities to take advantage of the exploration vision. Congress also directed the NRC to conduct a thorough review of the science NASA is proposing to undertake within the initiative. In February 2005, the NRC released Science in NASA s Vision for Space Exploration, the first report of the two studies undertaken to carry out these requests. The second report focuses on NASA s plan for the ISS. This report provides broad advice on programmatic issues that NASA is likely to face as it attempts to develop an updated ISS utilization plan. It also presents an assessment of potentially important research and testbed activities that may have to be performed on the ISS to help ensure success of some exploration objectives. http://www.nap.edu/catalog/11512.html -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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Sep 22 2006, 11:42 AM
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
Solar Panels will always be oriented as best they can toward the sun. Iridium sats are a special case - they have a set of large aluminium antennae that are at an angle that reflects light onto the ground just right to create the flares.
http://www.obsat.com/irimage_e.html of course, there's always still scope for the odd flash or flicks if the angle between a part of the station and the sun is right- but I don't think we'll ever see things like the flares occuring. Of course - if it gets to mag -3 or lower - then we're talking brighter than 50% of Iridium flares anyway Doug |
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Sep 22 2006, 01:03 PM
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Of course - if it gets to mag -3 or lower - then we're talking brighter than 50% of Iridium flares anyway That reminds me of one night a while ago, I was watching TV in a dark room and suddenly a bright flash out the window in the corner of my eye caugh my attention. It lasted for maybe a second or two, but was really bright. I immediately felt it had to either be an almost stationary meteor (it was a slow mover) or an Iridium flare, so one check at www.heavens-above.com and there it was: -8 magnitude, predicted right at the time I saw it. The thing still remains the brightest flare I saw. If only I was looking directly at it! -------------------- |
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