- Sorry, but the link to the NASA Wepage did not cut & and paste as a link. See if this works. http://earth.jsc.nasa.gov/newsletter/SpatialRes/default5.htm From another geocacher: That pops up occasionally on lists of weird thing in GE. The amazing think is that the word is 2.5 miles long. In fact because it can be measured precicely,NASA uses it to help calculate resolution on images taken from space. See last paragraph of "5.5. Empirical Confirmation of Spatial Resolution Estimates" on the NASA webpage. **************************************** For List Info or To make _ANY_ changes, including unsubscribing from this list, click -----> //www.freelists.org/list/geocaching Missouri Caches Scheduled to be Archived http://tinyurl.com/87cqw