| What the equinox 'henge' effect tells us about U.S. cities The fall equinox, which arrives Tuesday in the U.S., brings shorter days, and chances to witness alignment between Earth and the sun. It's a modern version of ancient observances of a celestial shift. (Image credit: Bilgin S. Sasmaz) |
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At www.npr.org from NPR
At www.npr.org from NPR
