Landsat is a joint effort of both USGS and NASA. USGS conducts Landsat operations and NASA develops and launches new satellites that meet USGS requirements. In addition to imagery of natural hazard events, Landsat provides valuable data for land use research.
Source: Jon Campbell, USGS
For further information:
+ USGS press release
Using decades of Landsat satellite imagery, scientists at Geoscience Australia have mapped annual shoreline locations for the entirety of Australia going back more than thirty years.