Now and then a reader asks why the Moon isn't always in our night sky. While the answer is obvious to astronomers, most people have lives outside astronomy, or more to the point, they have lives that are mostly inside buildings.

Modern humans have lost touch with the night sky compared to our ancestors, to the point that even some of the most intelligent people on the planet are too wrapped up in the day-to-day to know much about what's going on at night.