Thermal infrared data from Landsat is used to determine how much water is used in a farm field thumbnail: http://svs.gsfc.nasa.gov/vis/a000000/a003600/a003632/et_wetfields.0700_gal.png

Bidding Farewell to Virginia T. Norwood, the Mother of Landsat
Virginia T. Norwood, a founding figure in the field of satellite land imaging, died on Sunday, March 26, 2023, at age 96.