Sonic Boom vs Sun Dog

http://www.youtube-nocookie.com/v/SsDEfu8s1Lw&hl=en_US&fs=1&rel=0&hd=1 via youtube.com Perched on top of an Atlas V rocket, on February 11 the Solar Dynamics Observatory launched into space. About a minute after leaving the Earth, the rocket did two things: it passed the speed of sound, and screamed past a sundog, a rainbow-colored optical effect in the sky caused by ice crystals.Continue reading “Sonic Boom vs Sun Dog”