ESA's Proba-3 will be the first mission to create an artificial total solar eclipse by flying a pair of satellites 150 meters apart. For six hours at a time, it will be able to see the sun's faint atmosphere, the corona, in the hard-to-observe region between the sun's edge and 1.4 million kilometers from its surface. This new technology combined with the satellite pair's unique extended orbit around Earth will allow Proba-3 to do important science, revealing secrets of the sun, space weather and Earth's radiation belts.
