The NASA Landsat-8 program is a satellite imaging mission that provides global coverage of the Earth’s land surface. Launched in 2013, Landsat-8 carries two instruments: the Operational Land Imager (OLI) and the Thermal Infrared Sensor (TIRS). OLI captures images with a resolution of 30 meters and has nine spectral bands, while TIRS measures thermal infrared radiation with a resolution of 100 meters and has two spectral bands. The Landsat-8 program is part of a long-running series of Earth observation satellites that started in 1972 with the launch of Landsat-1. The program provides critical data for a wide range of applications, including natural resource management, agriculture, forestry, and disaster response.