We love clocks, but we especially love unusual timepieces that aren’t just about showing the hour of the day. [Simone Giertz] built a flip clock moon phase tracker for a friend. While in Egypt for ...

Assuming you’re not stuck in a prison cell without windows, you could feasibly keep track of the moon and tides by walking outside and jotting things down in your notebook. Alternatively, you could ...

How do we know when the next full moon is? While a full moon calendar comes in handy, learning the moon phases will help you predict when the next full moon will be. Another plus? You'll better ...