Sunita Williams, an astronaut, took photos of the Earth at night from the International Space Station. The photos show night falling across different regions, with city lights appearing as countries enter darkness. Key areas pictured include North Africa, the Canary Islands, Europe, the Alps, Iceland, the Black Sea, Red Sea, Brazil, the United States, and Puerto Rico. The document urges sharing the photos widely so future generations can appreciate the beauty of the Earth from space.