USGS EarthExplorer

Download of satellite, aircraft, and other remotely sensed raster data. Free account setup is required. Most data is freely available for download and in the public domain. Select datasets have use restrictions and/or fees associated with them, these are indicated within EarthExplorer.

Virtual Reality in Geography

The ideas and techniques of virtual reality are now being made available for the creation of artificial or virtual geographies (a virtual geography refers to the creation of artificial geographies for use in research and teaching, using ideas and techniques from the field of virtual reality (VR))