The X-37B Orbital Test Vehicle-7, a top secret US spaceship, successfully completed a 434-day mission in orbit and landed at Vandenberg Space Force Base in California. It performed an innovative aerobraking manoeuvre and tested space domain awareness technology.
Key Points
X-37B is a dynamic unmanned spaceplane
Aerobraking involves multiple passes into Earth's atmosphere to change orbit
Mission 7 tested technologies critical for US Space Force's space operations
Pros
Successfully completed a long-duration mission in orbit
Innovative aerobraking manoeuvre to change orbit
Tested space domain awareness technology
Cons
Limited public information about true purpose
Top secret nature raises questions about transparency