Oct 16, 2016
US Air Force’s X-37B space plane has been in orbit for 500 days, but why?
Posted by Karen Hurst in categories: military, robotics/AI, space travel
Fuel/ energy efficient method for travel is my guess.
The US Air Force’s unmanned X-37B space plane has now spent more than 500 days orbiting the Earth, without statement or explanation. The 29-foot unmanned plane is part of the Air Force’s orbital program.
Launched May 20, 2015, it is the program’s fourth flight (hence its other name, OTV-4 for Orbital Test Vehicle-4). The first OTV took flight in 2010 and spent 224 days in orbit; two others brought the total number of OTV days in orbit before 2015 to 1,367, according to the Air Force.
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