Some of the most interesting images ever taken are used for educational purposes. As designers look into ways to keep educational content as thrilling and educational as possible, it becomes inevitable that the photos chosen for subjects like science, math, and even geography are as engaging as things get. The explosion of a supernova, the symmetry of a leaf, or the scale of the wall of China are all captivating images yet serve a purpose to educate. As long as such images are fueling the desire to learn, they are doing their job.