After completing a 22-month clandestine mission in orbit above undisclosed nations, the spaceplane is all set to land at the US military space base in California this week. The exact time for the landing of the mysterious X-37B has not been disclosed yet, perhaps it would depend on the weather and technical factors.
Two of the clandestine spaceships have been launched by the US Air Force so far. The two spaceships have been launched for three missions over the last few years. The first X-37B had completed two missions, whereas the second has gone onto one trip so far.