For our twin Van Allen Probes 🛰️🛰️, seven years in the hazardous radiation belts ☢️ around our home planet led to major discoveries about our near-Earth environment. In honor of the @NASASun mission's end today, here are 10 highlights from its findings: https://t.co/TteTWY0LDg pic.twitter.com/qzQAqRU0cz

— NASA (@NASA) October 18, 2019