Before long, your phone chirps in your pocket to let you know! Pulling out your phone, you see a 3D view of the sun a digital reconstruction of images freshly downloaded from NASA's "STEREO" satellites, orbiting millions of miles away.
You rotate the sun with your finger to view it from any angle. You pinch in and out to zoom in for a closer look at the sun's ever-changing surface.Check out the App here.
Read more about NASA's STEREO program itself here.
Mercury's Tail! So cool! (Be sure to scroll all the way down for the short video.)