The U.S. Defense Advanced Research Projects Agency's Experimental Spaceplane (XS-1) program, which aims to make launching satellites a daily occurrence, is moving on to new phases of development. The vehicle's first flight could come in 2019.
The U.S. Defense Advanced Research Projects Agency's Experimental Spaceplane (XS-1) program, which aims to make launching satellites a daily occurrence, is moving on to new phases of development. The vehicle's first flight could come in 2019.
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