GOCE

GOCE (Gravity field and steady-state Ocean Circulation Explorer) was an ESA Earth Explorer gravity mission launched on 17 March 2009 ^[1][2]. The mission used the Electrostatic Gravity Gradiometer to measure Earth's gravity field in three dimensions while the spacecraft operated in a low, drag-free orbit ^[3][4]. ESA declared the end of mission on 21 October 2013 after the spacecraft ran out of fuel, and re-entry followed on 11 November 2013 ^[5][1]. GOCE data support static gravity-field and geoid products for ocean circulation, sea-level, geodesy, and solid-Earth applications ^[2].