Explore the European Space Agency's Earth Observation satellite missions. Learn all about ESA's dedicated Earth Explorers or collaborations with other agencies through the Third Party Missions programme.
Mission - Heritage Missions
The ERS programme was composed of two missions, ERS-1 and ERS-2, which together observed the Earth for 20 years, from 1991 to 2011.
Mission - Third Party Missions
The SPOT (from French "Satellite pour l'Observation de la Terre") series of missions has been supplying high-resolution, wide-area optical imagery since 1986.