The crossword solution for the term 'REACHES VIA PLANE' is LANDSAT, which is an acronym for the Landsat Program. The Landsat Program is a series of Earth-observing satellite missions jointly managed by NASA and the U.S. Geological Survey. The program has been collecting data since 1972, making it the longest-running civilian satellite imaging program in existence. The satellites are used to observe and monitor changes in land cover, land use, and natural resources over time.