![The US Air Force's top secret space plane lands after 2 years in orbit — and no one knows why](https://hight3ch.com/wp-content/uploads/2017/05/the-us-air-forces-top-secret-spa.jpg)
On May 7, the Kennedy Space Center in Cape Canaveral, Florida got a loud surprise. One of the Air Force’s two secret X-37B space planes announced its re-entry to Earth with a loud sonic boom.
On May 7, the Kennedy Space Center in Cape Canaveral, Florida got a loud surprise. One of the Air Force’s two secret X-37B space planes announced its re-entry to Earth with a loud sonic boom.