Until I actually saw the Northern Lights in the flesh, I had always wondered about their 3-dimensional structure, sensing that 2-d photos do not do them justice. Now, a team has made a 3-d film (the kind you watch with those red and green goggles) of “the largest thing on earth you can visualize in 3-d”, filming at -40F with two cameras twenty miles distant in Lapland.

View a video on the expedition, with some footage from the film, here. (New Scientist)