The longest night

Bright blue holiday lightsNow is the time our planet’s Northern hemisphere tilts away from the sun. The winter sun shines, but warms not, the cool greeting of a former friend. The earth rotates around the sun like a child’s spinning top, almost perfectly timed by the gravitational forces locking the star and planet together in mathematical synchrony. On the planet’s surface, the temperature drops and so pressure differentials arise – winds blow in unseen kaleidoscopic convective patterns. Clouds of water vapor form and hang over us. The gloom and cold come with the year’s longest night. (more…)

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