Why is the lunar month exactly equal to the human female menstrual cycle? This is a question that came up in the New Mars forums, and if you click on the first link, it turns out that it is not exactly equal in the first place.
Why is the lunar month exactly equal to the human female menstrual cycle? This is a question that came up in the New Mars forums, and if you click on the first link, it turns out that it is not exactly equal in the first place.