India at night
This night image of India, taken on 12 January 2015 from the International Space Station (ISS), shows with clarity and surprising detail the human geography of cities of different sizes, such as Kochi and Coimbatore, and the highways that connect cities.
The almost unpopulated hilly escarpment, known as the southern Ghats, is a dark zone parallel to the coast. A patch of clouds are illuminated by a nearly-full moon.
Astronauts pass from the day side of the planet to the night side sixteen times every 24 hours and therefore quickly adapt to very different visual conditions of night and day.
View the full resolution image, and another astronaut's view of India during the day from 1966.
Credit: NASA Earth Observatory