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Edge of Space Sciences Main menu Search form EOSS Upcoming Flights Navigation About Edge of Space Sciences EOSS Edge of Space Sciences EOSS is a Denver Colorado based nonprofit organization that promotes science and education by exploring frontiers in amateur radio and high altitude balloons. Click Read More for more information. Our organization works with educators offering valuable opportunities to enhance their students studies of science technology engineering and math STEM through real handson experience. We provide FAA coordination launch tracking and recovery of the payloads.