Why DARPA Is Pursuing the Reusable Military XS-1 Spaceplane
Tuesday, May 17, 2016 - 15:50
in Mathematics & Economics
Here's a phrase that’s not repeated everyday in the space community: "You've heard Elon's comments … we want to go beyond that," Brad Tousley, the head of the tactical technology office at the Defense Advanced Research Projects Agency, said May 15.