A mysterious space plane will soon reach Earth. According to CNN, there is no clear information about the mission of this “mini space shuttle”, because there are multiple theories about the reason this plane was sent into space.
The robotic space plane, similar to a shuttlecraft, is called X-37B and was launched 20 months ago, its mission being a secret one. Built by Boeing for the American Air Force, the plane that is 8.9 meters long and has a wingspan of 4.5 meters, works with electricity from solar cells and batteries based on lithium ion and is expected to land at the Vandenberg Air Force Base in California. Because of the mystery about the shuttle, there are several theories: the plane actually tests a secret space weapon or it has espionage missions.