BARREL (Balloon Array for Radiation belt Relativistic Electron Losses) is a multiple-balloon investigation that will study Earth's Radiation Belts.
Atmospheric losses of relativistic electrons play an important role in radiation belt dynamics; precipitation into the atmosphere may even completely deplete the radiation belts in some cases.
BARREL is the first NASA Living With a Star Geospace Mission of Opportunity, and will support NASA's RBSP (Radiation Belt Storm Probes) mission.
SANAE launched Payload 1T today at 1539 UT. We also terminated 1R yesterday at 1123 UT. We currently have 7 payloads up. At Halley, Payload 1A is ready for launch. We are expecting a launch opportunity this weekend. We expect to terminate payload 1I and 1G very soon. Robyn