Delft Institute for Earth-Oriented Space Research http://www.deos.tudelft.nl/
Research activities related to processing and analyzing space based Earth observations and modeling/computing the high precision satellite orbits that are often required for that type of analysis. Geodesy is also a research area.
USGS: Geo Data http://edc.usgs.gov/geodata/
FTP File Access. These data files are for use in geographical information systems for analysis and integration with other geospatial data.