Landsat 8 is a satellite mission by NASA and the U.S. Geological Survey that provides high-quality images of Earth's surface for a variety of applications, including environmental monitoring, land use planning, and natural resources management. The satellite collects data in visible, near-infrared, and thermal infrared bands with a spatial resolution of 15 to 100 meters. Landsat 8 is designed to capture detailed and accurate images of the Earth's surface to help scientists better understand and monitor changes in the environment over time.