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 Landsat-1 to 3 satellites were the first in the United States' Landsat programme, dedicated to monitoring the Earth's land mass.