Technical descriptions of the Landsat satellites can be found by following the links at the bottom of this page.
For regularly updated information on the Landsats 5 and 7 missions visit the USGS Landsat website.
For detailed information on Landsat 7 data use, visit the Landsat 7 Science Data Users Handbook.
To watch a live broadcast of Landsat data collection, visit USGS EarthNow!