Spaceflight is when a thing (spacecraft) made by man flies into outer space. A spaceflight can happen with or without humans on board. The Russian Soyuz program, the US Space Shuttle and the International Space Station are examples of manned (with humans) missions for spaceflight. Space probes and satellites (which orbit the Earth), are examples of unmanned (without humans) spaceflights. These operate either by radio control or are fully independent.