SNOE Student Nitric Oxide Explorer Type SmallSat Launch Feb. 26, 1998 Target Earth Objective Measure changes from Sun energy and other factors on Earth's upper atmosphere Learn more about SNOE Keep Exploring Discover More from Earth Science Explore Earth Science Earth Science at Work NASA Earth Science helps Americans respond to challenges and societal needs — such as wildland fires, hurricanes, and water supplies… Earth Science Missions In order to study the Earth as a whole system and understand how it is changing, NASA develops and supports… Earth Science Data Open access to NASA’s archive of Earth science data
