AstronautAtlas
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Program archive
Earth Observing System is explored here through 4 archived missions, from Terra through Aura, with the program’s spacecraft, people, milestones, and source-backed history connected along the way.
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Choose a path through the Earth Observing System archive.
Every archived Earth Observing System mission, in launch order.
AquaActive in a drifting orbitUncrewed Earth-observation and climate satelliteAfternoon Sun-synchronous orbit followed by a controlled free driftAqua launched on May 4, 2002 into afternoon sun-synchronous orbit followed by a controlled free drift.
TerraActive with reduced instrument operationsUncrewed Earth-observation and climate satelliteDescending morning Sun-synchronous low Earth orbitTerra launched on December 18, 1999 into descending morning sun-synchronous low earth orbit.
ICESatCompleted after nearly seven years of elevation observationsRoboticNear-polar low Earth orbitMeasure ice-sheet elevation and mass balance, sea-ice freeboard, cloud height and vertical structure, land topography, and vegetation canopy height with spaceborne laser altimetry.
AuraActiveUncrewed Earth-observation and climate satelliteAfternoon Sun-synchronous low Earth orbitAura launched on July 15, 2004 into afternoon sun-synchronous low earth orbit.