Landsat General

The Landsat Program is a series of Earth-observing satellite missions jointly managed by NASA and the U.S. Geological Survey.
Landsat has the optimal ground resolution and spectral bands to efficiently track land use and to document land change due to climate change, urbanization, drought, wildfire, biomass changes (carbon assessments), and a host of other natural and human-c
Landsat is recognized globally to be a unique data set and the standard for land use trends and land change detection. Its community of users is considered to be broad and wide-ranging, touching nearly every field in land management and the terrestrial
There are no restrictions on Landsat data downloaded from USGS, and it can be used or redistributed as desired. However, a statement of the data source when citing, copying, or reprinting USGS Landsat data or images is recommended. 
You can locate historical Landsat mission documents through the NASA Landsat Legacy Project.  It is an archive of technical, policy, and science related documents with an emphasis on
All Landsat scene identifiers are based on the following naming convention:
The U.S. aerospace industry would build the flight, launch, and ground segments as they have always done. In addition, other U.S. companies will continue using Landsat data to build value-added products to sell in various markets. U.S.