Last updated on April 17, 2014 at 17:30 EDT

Latest US Shuttle Radar Topography Mission Stories

2010-10-17 08:49:20

Two German radar satellites that are being used to create the most detailed 3D map of the Earth's entire surface, have moved to within 1150 feet of each other in what scientists are calling a "tight formation."The pair of satellites, TanDEM-X and TerraSAR-X, are sweeping around the globe at about 4.5 miles per second. They will soon begin an intense observation campaign that will pin down the variation in height across the Earth's surface to a precision of better than 7 feet.The digital...