The four changes of the seasons, related to the position of sunlight on the planet, are captured in this view from Earth orbit The images show how sunlight fell on the planet throughout the year with each images taken at 6:12 a.m. local time. Thur NASA
The four changes of the seasons, related to the position of sunlight on the planet, are captured in this view from Earth orbit The images show how sunlight fell on the planet throughout the year with each images taken at 6:12 a.m. local time. Thur NASA

Winter solstice is Thursday. Why the shortest day of the year really matters

December 20, 2017 10:22 PM