The X-37B Orbital Test Vehicle in the encapsulation cell at the Astrotech facility April 2010, in Titusville, Fla. Air Force officials are scheduled to launch the X-37B April 21, 2010, at Cape Canaveral Air Station, Fla. The X-37B is the U.S.'s newest and most advanced unmanned re-entry spacecraft. (Courtesy photo).
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发表于 2010-4-17 23:50 · 上海
