Happy Pi Day! This image is a visualization of the first 1,000 digits of Pi, shown as links between successive digits. The 10 different segments around the circle each represent a digit 0 through 9. For each pair of adjacent digits in Pi, the curves in the center of the circle connect a pair of segments associated with these digits. For example, the "14" in "3.14..." is drawn as a link from segment 1 to segment 4. The big green splotch at the top is known as the Feynman Point, the point at digit 762 of Pi where six 9's appear in succession. Got all that? Good. It's going to be on the quiz.