Landsat Missions
Level-1 Landsat metadata are stored in a text (MTL.txt) file and delivered with the Level-1 Data Product download file. An example of the MTL file can be found on the Level-1 Landsat Data Products Metadata web page.
Landsat represents the world's longest continuously acquired collection of space-based moderate-resolution land remote sensing data. Four decades of imagery provides a unique resource for those who work in agriculture, geology, forestry, regional planning, education, mapping, and global change research. Landsat images are also invaluable for emergency response and disaster relief.