NASA | SDO: Year 4

Music: Stella Maris courtesy of Moby Gratis. Information about the individual clips used in this video is available at: The sun is always changing and NASA’s Solar Dynamics Observatory is always watching. Launched on Feb. 11, 2010, SDO keeps a 24-hour eye on the entire disk of the sun, with a prime view of the graceful dance of solar material coursing through the sun’s atmosphere, the corona. SDO’s fourth year in