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.
166 sunspots are now visible. NOAA increased the likelihood of a M class flare to 60% and a 5% chance of an X class flare. The evil twins have started crackling, but are only about a fourth of the way across the sun so still a few days away until they may become geo-effective. There was a C5 flare which we may have observed at one of the balloons.