Credit: Jacques Descloitres, MODIS Land Rapid Response Team, NASA/GSFC
This MODIS image from May 17, 2002, shows the Volga River running north-south and emptying into the Caspian Sea. At lower left, extensive cultivation of the land can be seen in the regular patterns of fields. The light-colored waters of the Caspian Sea may be due to high sediment in the rivers that flow into it, as well as pollution and aquatic plant growth.
The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2]
http://visibleearth.nasa.gov/view_rec.php?id=3823 Credit: Jacques Descloitres, MODIS Land Rapid Response Team, NASA/GSFC This MODIS image from May 17, 2002, shows the Volga River running north-south and emptying into the Caspian Sea. At lower left, exte