The Air Force’s secret space plane has been up in orbit
for nearly 500 days—a space endurance record. But nearly a year and a
half into the mission, the Pentagon still won’t say what the X-37B is
doing up there, or when it might come back........
The U.S. Air Force boosted the robotic X-37B atop the nose of an Atlas-5 rocket in December 2012. Since then it’s orbited the Earth thousands of times, overflying such interesting places as North Korea and Iran.
