NASA @NASA
๐ Today marks the beginning of the autumnal equinox, when day and night are nearly equal, and the first day of astronomical fall in the Northern Hemisphere. ๐ Why equinoxes only happen twice in Earthโs year-long trip around the Sun: https://t.co/ONMn48hyE3 https://t.co/nTisRdf0jM — PolitiTweet.org