Launched on 17 March 2009, ESA's Gravity field and steady-state Ocean Circulation Explorer (GOCE) mission was the first Earth Explorer mission in orbit. This novel mission delivered a wealth of data to bring about a whole new level of understanding of one of Earth's most fundamental forces of nature ? the gravity field.
GMES Sentinel-3 : Mission Requirements Document The scope of thisdocument is to outline the objectives and from it the derivedscientific and mission requirements of a first GMES Sentinel-3mission planned for launch in the 2011-2012 timeframe. This MissionRequirements Document is intended to provide guidelines for thetechnical implementation of the mission.