With the free 3D Sun app, you can set your phone to alert you when a new solar flare erupts, watch video of a solar prominence or a comet heading into the sun. You can manipulate an image of the sun in three-dimensions with your finger. The data is streamed to Earth by NASA’s twin STEREO spacecraft which monitor the sun from two different spots, one ahead of Earth in its orbit and one behind, giving stereoscopic images to give a sort of three-dimensional view, similar to the way our two eyes do.
(via NASA Brings the Dark Side of the Sun to Your iPhone | Wired Science | Wired.com)