USGS Satellite Product Information
- Landsat Project Website
- Landsat 7 ETM+
- Landsat 1-5 TM
- Landsat 1-5 MSS
- The "Thematic" Description of the Landsat TM sensor
Download Free Geospatial Data
- Seamless Data Distribution System: Orthoimagery (Landsat mosaic), land cover, elevation, hydrography, boundaries, transportation and structures
- Earth observation magazine Tutorial (high school, undergraduate)
Remote Sensing Outreach Sites
Remotely Sensed Image Galleries
- USGS Earthshots - Satellite Images of Environmental Change
- NASA's Gateway to Astronaut Photography
- National Snow and Ice Data Center
- NASA's Goddard Space Flight Center Image Gallery
- Earth As Art
- NASA Visible Earth
- ASTER Gallery
- University of Wisconsin's Space Science and Engineering Center (Real-time Images)