From NASASun https://twitter.com/NASASun on Twitter: # is on its way to the Sun, where it will come within 4 million miles of the surface. The region it will fly through, the corona, is actually hundreds of times hotter than the surface. That's one mystery we hope to solve with this mission. https://t.co/oeORHuLCtB https://twitter.com/NASASun/status/1028689570060062720/video/1 https://chirp.cooleysekula.net/attachment/51624