Look to the skies to see what happens tonight.
Depending on the location, late night December 20 or early morning December 21, the full moon will be darkened by Earth’s shadow as our planet passes between it and the sun. December 21 is also the winter solstice, the longest night of the year, after which the days will begin to grow longer. Coupled with the lunar spectacle, it means we’re in for an especially dark eve…