US Military's Satellite-Launching XS-1 Space Plane Could Fly in 2019

The U.S. Defense Advanced Research Projects Agency (DARPA) is now entering the second and third phases of its ambitious Experimental Spaceplane (XS-1) program, which aims to make launching satellites a daily occurrence. "I can tell you officially now that we have been funded by the [Obama] Administration for the next phase of XS-1," DARPA's Jess Sponable told applauding attendees at the Space Access '16 Conference in Phoenix last week. DARPA launched the XS-1 program in 2014 with the goal of dev