NASA @NASA
It’s going to be a long night. In the Northern Hemisphere, that is. Tonight is the #WinterSolstice, which occurs when either of Earth's poles reaches its maximum tilt away from the Sun. This happens twice yearly, once in each hemisphere. Learn more: https://t.co/ajZ6kJlVXw https://t.co/je6JDLHe8F — PolitiTweet.org