When the Sun Never Sets

One of the funny things about living on a big spinning ball of rock and metal in space is that what you see depends on where you are. Where I live, in Colorado, the Sun rises every day, makes an arc in the sky, then sets some time later. The same is probably true for you, too. What's really happening is that we're affixed to that spinning ball, and as it sweeps us around we move in a tilted circle, sometimes on the side of the Earth facing the Sun, sometimes facing away, but always in motion. Th...