Seen on @NatGeoChannel’s #OneStrangeRock: Pilots chasing the shadow of #Eclipse2017, which traveled at ~2,000mph! #DYK that this eclipse provided a perfect opportunity to study the solar atmosphere, aka the corona? See what we learned about the ☀️: https://t.co/4GndnadYn8 https://twitter.com/NASA/status/991137275412172802/photo/1 source: https://twitter.com/nasa/status/991137275412172802