July 21, 2017 - Celebrating Forty-Five Years of Landsat

On July, 23 2017, the Landsat Program will celebrate forty-five years of continuous Earth observation. NASA — working in cooperation with the U.S. Department of the Interior (DOI) and its science agency, the USGS — launched the first Landsat satellite (originally named Earth Resources Technology Satellite 1) on July 23, 1972. (Read More)