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Night Vision—Reason for the Seasons

Posted March 12, 2019

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In Night Vision—Reason for the Seasons, we'll explore how astronomical motions create yearly cycles. The effects of these range from changes in the sky, weather, and temperature here on the surface, to illuminating the inner chambers of ancient temples at sunrise on one day per year.

Earth's Tilt
Earth's tilt causes the northern and southern hemispheres to get different amounts of light over the course of one year. (Image credit: Tauʻolunga)


Some of the consequences are dramatic and easy to notice, like the temperature. But there are more subtle seasonal changes to the sky as well, like the motion of the constellations and the motion of the Sun and Moon. Did you know seasonal cycles will shift the true reading of a sundial? And what is an analemma (i.e. the weird figure-eight thing on the globe in your classroom)?

Analemma
This means something. This is important. (Image credit: Politikaner)


With our digital dome theater, we'll fully visualize and illustrate the relationships between the Sun and Earth that produce these seasonal effects. And as we approach the this years summer solstice — which will occur on Friday, June 21st — you'll have a great excuse for a celebratory cookout, as well as an opportunity to connect your view of the sky with your place in the cosmos.

Join us for Night Vision—Reasons for the Seasons, on Thursday, March 14th, and Saturday, March 16th, 2019, at 6:45 pm in the Hansen Dome Theatre. Tickets are just $2.00 per person for the public, and free for members of Clark Planetarium. Get your tickets now.