Artist’s concept of DARPA Experimental Spaceplane XS-1 deploying satellites to low-Earth orbit. Credit: DARPA
The Defense Advanced Research Projects Agency (DARPA) is moving forward with its goal of developing the next generation XS-1 Experimental Spaceplane aimed at creating a fully reusable unmanned vehicle to launch small payloads into orbit at radically lower costs.
The X-37B’s deployable solar array enables it to ‘loiter’ in low-Earth orbit for far longer than the Shuttle could ever achieve. With two missions behind it—the first of which lasted 224 days, the second 469—it remains to be seen how long OTV-3 will remain aloft. Image Credit: Boeing Phantom Works
After several delays, United [...]