Fertile Mind ; Midsummer Is the Time to Let Down Your Hair

Summary

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Wednesday was midsummer's eve - the longest day of the year, followed by the shortest night. From now through Dec. 21, each day will have slightly less daylight than the one that preceded it, with night getting the extra moments. Also called the summer solstice, it marks the first day of summer on the Gregorian calendar hanging in your kitchen, though we know summer has been since May 1. It really is midsummer.

Given our rotating planet's 23.5-degree tilt on its axis and the fact that Earth also revolves around the sun, the northern and southern hemispheres take turns basking in the sunbeams.

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Fertile Mind ; Midsummer Is the Time to Let Down Your Hair

Even passive observation of the sunrises and sunsets that define this planet's successive days can give a sense of the sun's traveling arc across the sky. And in ancient times, when the cosmos presided over and inf...

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