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Clouds from suborbital sounding rockets are seen here, part of the Anomalous Transport Rocket Experiment (ATREX), launched from Wallops Island off the Virginia coast. The rockets released trimethyl aluminum, a chemical tracer, that turned into milky white luminous clouds, at altitudes of 50 to 90 miles to study the interaction of high altitude winds and complicated electrical current patterns that surround the Earth. Background star fields include the Milky Way in Scutum, Sagittarius, and Scorpius, and the constellation of Ophiuchus. Exposure Data
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