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A sounding rocket seconds in mid-launch off the launch pad with a bright white plume underneath. The rocket is silhouetted by the sun behind it. In the background is a blue sky with big, puffy white clouds.

HotShot Launch Photos

A two-stage Terrier-Improved Malemute suborbital sounding rocket carrying the experiments for the High Operational Tempo (HOTShot) program launched at 6:07 p.m. EDT on September 11, 2021, from NASA’s Wallops Flight Facility. The HOTShot program collects scientific data that benefits aerospace research and informs future weapon designs for the U.S. nuclear enterprise. Its non-nuclear scientific experiments evaluate prototypes and help develop high-fidelity computer models and mechanical flight simulators.