One of my favorite pictures out there. Source: http://antwrp.gsfc.nasa.gov/apod/ap001127.html Explanation: This is what the Earth looks like at night. Can you find your favorite country or city? Surprisingly, city lights make this task quite possible. Human-made lights highlight particularly developed or populated areas of the Earth’s surface, including the seaboards of Europe, the eastern United … Continue reading The Earth at Night