Eclipse Rocket Launches to be Visible from Hagerstown Area

HAGERSTOWN, MD News (4/8/2024) – NASA’s Wallops Flight Facility is set to launch three Black Brant IX sounding rockets as part of the Atmospheric Perturbations around Eclipse Path (APEP) mission during the solar eclipse on April 8, 2024. Scheduled to commence at 2:40 p.m. EDT, these launches aim to explore the effects of the eclipse on Earth’s upper atmosphere, and will be visible from the Hagerstown area, weather permitting.

Led by Aroh Barjatya, a professor at Embry-Riddle Aeronautical University, the APEP mission seeks to investigate disturbances in the ionosphere caused by the temporary dimming of sunlight during an eclipse. The rockets, which have been refurbished with updated instrumentation following a successful launch during the October 2023 annular solar eclipse, will be launched 45 minutes before, during, and after the peak of the local eclipse.

The ionosphere, situated between 55 to 310 miles above Earth’s surface, plays a crucial role in reflecting and refracting radio signals and affecting satellite communications. Understanding its behavior during events like solar eclipses is vital for maintaining reliable communication systems.

To capture data on the ionospheric disturbances triggered by the eclipse, the APEP rockets will carry out measurements of charged and neutral particle density, as well as electric and magnetic fields. Additionally, each rocket will release four secondary instruments, equivalent to data from fifteen rockets, providing comprehensive observations.

The APEP mission complements other efforts across the United States to study the ionosphere during the eclipse. Teams from institutions such as Embry-Riddle, MIT’s Haystack Observatory, and the Air Force Research Laboratory will deploy various instruments, including high-altitude balloons and ground-based radars, to gather complementary data.

During the 2023 annular eclipse, scientists observed a significant reduction in charged particle density as the eclipse shadow passed over the atmosphere. The upcoming total eclipse presents an opportunity to further examine these perturbations and assess their consistency and impact.

Given that the next total solar eclipse over the contiguous U.S. is not expected until 2044, the APEP mission represents a rare chance for scientists to advance their understanding of ionospheric dynamics during eclipses.

The data collected from these experiments will contribute to refining models and predictions related to ionospheric behavior, ultimately enhancing our ability to mitigate potential disruptions to communication systems caused by atmospheric disturbances.

The launches will be live-streamed on Wallops’ YouTube channel, allowing audiences to witness these scientific endeavors firsthand. As the world anticipates the celestial spectacle of the solar eclipse, researchers stand ready to unveil new insights into the intricate interactions between Earth’s atmosphere and the cosmos.

Story by multiple RFHC contributors.