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Who Wants to Build a Global Space Network? My name is Robert Brand and although I am part of the Echoes Of Apollo group, this proposal is from me personally. Echoes of Apollo has been kind enough to allow me to tell others about this opportunity. They are in no way involved [...] Arecibo Joins us for Moon Bounce 2010 Although World Moon Bounce Day 2010 is scheduled for April 17th, this year we will have contacts running for three days as we have the famous Arecibo dish joining us. April 17th is the day that the ill-fated Apollo 13 mission returned to earth 40 years ago and we [...] Today’s Solar Information Group Formed to Save Iconic Moon Dish The NASA Moon TV Dish to be Welded in Place. World Moon Bounce Day 2010 2009-10-05 A tipping point for commercial crew? LCROSS Team Changes Target Crater for Impact World Moon Bounce Day 2009 RADIO AUSTRALIA INTERVIEW Number of dishes Grows for World Moon Bounce Day |
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Snapshot of the International Space Station  On March 13, 2008, the International Space Station passed across the field-of-view of Germany's remote sensing satellite, TerraSAR-X, at a distance of 195 kilometers, or 122 miles, and at a relative speed of 34,540 kilometers per hour, or more than 22,000 mph. In contrast to optical cameras, radar does not 'see' surfaces. Instead, it is much more aware of the edges and corners which bounce back the microwave signal it transmits. Smooth surfaces such as those on the station's solar generators or the radiator panels used to dissipate excess heat, unless directly facing the radar antenna, tend to deflect rather than reflect the radar beam, causing these features to appear on the radar image as dark areas. The radar image of the station therefore looks like a dense collection of bright spots from which the outlines of the space station can be clearly identified. The central element on the station, to which all the modules are docked, has a grid structure that presents a multiplicity of reflecting surfaces to the radar beam, making it readily identifiable. This image has a resolution of about one meter (about 39 inches). In other words, objects can be depicted as discrete units--that is, shown separately--provided that they are at least one meter apart. If they are closer together than that, they tend to merge into a single block on a radar image. Since this image was taken, the station has expanded and is more than 90 percent complete, including a full complement of solar arrays. Image Credit: DLR Read More |
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