Landsat 9 is a collaboration between NASA and the U.S. Geological Survey, and will continue the Landsat program’s critical role in monitoring, understanding and managing the land resources needed to sustain human life. The mission will provide moderate-resolution (15 meter to 100 meter, depending on spectral frequency) measurements of the Earth's terrestrial and polar regions in visible, near-infrared, short wave infrared, and thermal infrared wavelengths. There are two instruments on the spacecraft, the Thermal InfraRed Sensor 2 (TIRS-2) and the Operational Land Imager 2 (OLI-2).
Landsat 9 will provide continuity with the nearly 50-year long Landsat land imaging data set. In addition to widespread routine use for land use planning and monitoring on regional to local scales, support of disaster response and evaluations, and water use monitoring, Landsat measurements directly serve NASA research in the focus areas of climate, carbon cycle, ecosystems, water cycle, biogeochemistry, and Earth surface/interior.
The Landsat program is the only U.S. satellite system designed and operated to repeatedly observe the global land surface at a moderate scale that shows both natural and human-induced change.