DARPA picks Northrop Grumman to develop 'lunar raiload' concept
Aerospace giant Northrop Grumman is outlining a proposed railway system for the moon, with support from the U.S. Defense Advanced Research Projects Agency.
TroibNews 
Aerospace giant Northrop Grumman is outlining a proposed railway system for the moon, with support from the U.S. Defense Advanced Research Projects Agency.
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