Artist's impression of the Astra-1B satellite in orbit. Astra-1B is used as a relay satellite for direct-broadcast 'satellite TV' channels. It was launched by an Ariane 44L rocket on 2 March 1991 into a geostationary orbit over Zaire. This allows transmission of TV signals direct to domestic users in Western Europe and the Canary Islands. The satellite is based on the GE 5000 platform, and has a design life of over 10 years.