Mysterious Spaceship Return to Earth

A US space shuttle missions underwent a secret for two years in space has returned to Earth and landed in California. The plane resembles a mini space shuttle and named Orbital Test Vehicle or X-37B, spent 674 days in orbit around the planet.

The spacecraft landed at Vandenberg Air Force Base on Friday morning. The purpose of the space mission was sealed by US defense and a number of theories have cropped up. One speculation is that the mini plane duty "peek" China's space laboratory. But experts said the possibility was small.



The only clue came from a US Air Force officer who told local media that the mission was sent in relation to "reduce risk, experimentation and concept of operations development for technology recycling shuttle rides."