An Adler Planetarium expert explains how the winter solstice occurs, its historical significance across cultures, and what longer winter nights mean for stargazing in the Northern and Southern ...

During winter in the United States, the Earth's Northern Hemisphere is tilted away from the sun. Less sunlight shines ...

This article was originally featured on The Conversation. People have been celebrating the summer solstice with elaborate rituals since prehistoric times. But humans aren’t the only species to take ...