NASA @NASA
So the Earth doesn't stand straight up: its axis is tilted at about a 23-degree angle. On the day of the summer solstice, the Northern Hemisphere faces the Sun at its most direct angleāmeaning more light as the Sun reaches its highest point in the sky: https://t.co/ld5HfKFBGI https://t.co/uGsb3i2kak — PolitiTweet.org