US X 37 B Spaceplane lands after record breaking 718 days in space ( OTV 4)

The unmanned, reusable US Air Forces X37B space plane has landed at NASAs Kennedy Space Center in Florida after spending a recordbreaking 718 days in orbit performing a secret mission. The OTV4 mission (Orbital Test Vehicle4) was the fourth mission for the X37B mini space shuttle. The goal of this mission was to perform technology testing in orbit, says the US Air Force. The US Air Forces X37B space plane was launched on May 20th 2015 on an Atlas V fifth X37B mission is scheduled to la