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Sentinel-3

Sentinel-3 is an Earth observation heavy satellite series developed by the European Space Agency as part of the Copernicus Programme. It currently consists of 2 satellites: Sentinel-3A and Sentinel-3B. Wikipedia
Applications: Earth observation
Built: 2
Bus: Prima
Design life: 7 years
Dimensions: 3.710 × 2.202 × 2.207 m (12.2 × 7.2 × 7.2 ft)
Last launch: Sentinel-3D; ≥ 2021
Launch mass: 1,250 kg (2,756 lb)