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Letter from the editor

The Moon in Meso-America

"Meso-America, a large area extending from northern Mexico south to El Salvador, was unified by a calendar that incorporated a 365-day year and a continuous 260-day divination count, forming a larger Calendar Round cycle that repeated every 52 years. ..." – By Susan Milbrath


"The impact/explosion problem was attacked from a different direction by Daniel Barringer, who bought the land around the now-famous Meteor Crater in Arizona and spent the rest of his life trying to understand the physics of this crater’s formation. ..." – By Boris Ivanov

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