Sharper resolutions allowing scientists to use satellites to locate ruins sites . Pictures from commercial satellites have been sharp enough only for past decade . The sensing devices employ any of an array of technologies , such as Ground Penetrating Radar . Comment: Colorado company 's new , advanced imaging satellite to be launched in 2009 .
Sharper resolutions allowing scientists to use satellites to locate ruins sites . Pictures from commercial satellites have been sharp enough only for past decade . Comment: Colorado company 's new , advanced imaging satellite to be launched in 2009 .