Aroh Barjatya, inspects the subpayloads that eject from the rocket mid-flight. The subpayloads carry the plasma density, neutral density, and magnetic field sensors. PHOTO: NASA’s Wallops Flight Facility/Berit Bland On April 8, 2024, during the solar eclipse that traversed the United States, Canada, and Mexico, the National Aeronautics and Space Administration (NASA) conducted a unique mission called Atmospheric Perturbations around Eclipse Path (APEP) by launching three Black Brant IX sounding