Boeing X-37B Orbital Test Vehicle explained
Boeing X-37B Orbital Test Vehicle (OTV) is a reusable unmanned spacecraft build for the U.S. Air Force. Managed by the Air Force Rapid Capabilities Office, the X-37B program is the newest and most advanced re-entry spacecraft that performs risk reduction, experimentation and concept of operations development for reusable space vehicle technologies.
Video courtesy of Boeing
Photos courtesy of U.S. Air Force
Video courtesy of SpaceX