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Last night (April 5th 2019) NASA's AZURE mission successfully launched 2 sounding rockets back-to-back from the Andøya Space Center in Norway. They released clouds of glowing tracers into the upper atmosphere (the background green is the real aurora though) to study and track the flow of neutral and charged particles in the ionosphere. Each dot is at a different altitude and notice they migrate at a different speed and direction! I recorded everything on time-lapse from Senja island over the course of the evening on Canon 6D and Sigma 14mm f1.8.