Scientists, for the first time, have imaged the edge of the sun and revealed origins of solar wind. Using one of our solar observatories, we can now have a global picture of solar wind evolution. Take a look: http://go.nasa.gov/2c8dQgc | NASA - National Aeronautics and Space Administration

(3/4) Tracking the solar cycle is a huge effort. It takes measurements of the Sun’s magnetic fields, complex models, and – most importantly – daily hand-drawn maps of the Sun’s surface ✍🏼 go.nasa.gov/3xbFz8p | NASA Space Alerts