The U.S. Geological Survey has just added more than 83,00 additional satellite images to the free download archive, this time from NASA’s Earth Observing -1 (EO-1) satellite . This announcement comes after much fanfare regarding the release of the free Landsat imagery archive in October 2008, and the recent release of 1,200 images of polar areas that were previously classified.
The EO-1 satellite contains both the Advanced Land Imager (ALI) “push-broom” sensor and Hyperion, an experimental hyperspectral instrument that captures data in 220 spectral channels. EO-1 and Landsat scenes can be previewed and downloaded through the USGS Global Visualization Viewer or USGS EarthExplorer. Technical details about the satellite and data format can be found on the Earth Observing 1 (EO-1) Web site.