The Russian Soyuz program, the American Space Shuttle and the International Space Station are examples of manned missions. (Manned means the spacecraft has humans on board.) On the other hand, examples of unmanned flights are space probes which fly into deeper space, and satellites which travel around and orbit the Earth or other planets. (Unmanned means the spacecraft does not have any people on board.) Space probes and satellites are both machines that work either by radio control from Earth or are fully automatic.