The West is an idea. It is not visible from space. An astronaut wiewing the blue-and-white terrestrial sphere can make out the form of Africa, bounded by the Atlantic, the Indian Ocean, the Red Sea, and the Mediterranean. Australia, the Americas, and even Antarcitica are distinct paches of blue-green in the darker waters that surrounded them. But nothing comparable separates Europe from Asia, East from West. Viewed from 100 miles up, the West itself is invisible. Although astronauts can see the great Eurasian theoretical boundary between East and West–appear but faintly from space. Certainly people are less impressive than the Himalayas, the Alps, or even the Caucasus. People, not geology, determined the Urals should be arbitrary boundary between Europe and Asia.