NASA's Landsat Art

Environmental Graffiti has posted the "30 Most Incredible Abstract Satellite Images of Earth." These images mimic abstract art but are actually photos taken by NASA from a Landsat 7 satellite 400 miles above the earth. Originally, these photos were on display at the Library of Congress in 2000, but you can view them now on Environmental Graffiti.

Pictured above, fluted underwater sand dunes from the Bahamas.