 The Outer Space Treaty of 1967 states simply that astronauts are to be rendered all possible assistance by state parties to the treaty.The Outer Space Treaty does not provide a definition for the term "astronaut", and as a result it is unclear whether this provision applies to, for example, a space tourist—a person who clearly has not received the training of a traditional astronaut.The Rescue Agreement adds some clarity to the issue by referring to the "personnel of a spacecraft" rather than "astronauts".