... The Sun in Three Dimensions . ... Credit Copyright: STEREO Project , NASA Explanation: What does the Sun look like in all three spatial dimensions? To find out, NASA launched two STEREO satellites to perceive three dimensions on the Sun much like two eyes allow humans to perceive three dimensions on the Earth. ... Pictured above are two simultaneous images of the Sun taken by STEREO A and STEREO B , now digitally combined to give one of the first 3-D pictures of the Sun ever taken. ...