Happy summer solstice! 🌞 🌍 This visualization from the European Space Agency shows a year of Earth's tilt from June 20, 2023 until June 19, 2024, captured at approximately 17:30 CEST. "You can see how the terminator line moved in the past year," per ESA. Today, the Northern Hemisphere will experience the longest day of the year and the Southern Hemisphere will experience the shortest. #Earth #Solstice #Summer #SummerSolstice | Environmental Defense Fund

Today is the Summer Solstice, aka the longest day of the year, marking the beginning of our astronomical summer. Solstices occur twice every year. During each one, the Earth's axis is tilted most closely toward the sun. The hemisphere tilted most toward our home star sees its longest day, the arrival of the first day of summer. | National Geographic UK