Northrop Grumman Unveils Concept for XS-1 Military Space Plane (Image)
Friday, August 22, 2014 - 16:30
in Mathematics & Economics
This week, aerospace firm Northrop Grumman released artwork depicting its conception of the XS-1 space plane, which it's designing under a $3.9 million contract from the U.S. Defense Advanced Research Projects Agency (DARPA).