Landsat is one of the longest running satellite programs for Earth observation, operated by the United States Geological Survey (USGS) and NASA. The Landsat program has been collecting multispectral satellite imagery of the Earth's surface since 1972, providing valuable data for a wide range of applications such as land cover mapping, monitoring of environmental changes, agricultural assessments, and urban planning. The Landsat satellites capture images with different spectral bands, allowing researchers to analyze various aspects of the Earth's surface such as vegetation health, land use changes, water resources, and natural disasters. The data collected by Landsat satellites are freely available to the public and are widely used by scientists, government agencies, and businesses for research and decision-making purposes. Overall, Landsat plays a crucial role in monitoring and understanding the Earth's dynamic environment and is an essential tool for studying and managing natural resources, environmental changes, and climate variability.