Ariane 1 | CAT 1

Vehicle evaluation payload for the Ariane 1 launch vehicle

Ariane 1 was the first rocket in the Ariane family of expendable launch systems. It was developed and operated by the European Space Agency (ESA), which had been formed in 1973, the same year that development of the launch had commenced.

The European Space Agency is an intergovernmental organisation of 22 member states. Established in 1975 and headquartered in Paris, France, ESA has a worldwide staff of about 2,000 employees. ESA's space flight programme includes human spaceflight (mainly through participation in the International Space Station program); the launch and operation of unmanned exploration missions to other planets and the Moon; Earth observation, science and telecommunication; designing launch vehicles; and maintaining a major spaceport, the Guiana Space Centre at Kourou, French Guiana.