This photograph, taken from the International Space Station (ISS), shows the sweep of the coastline of the eastern Mediterranean Sea. The cluster of lights at image center includes the major population centers of the Levant. The brightest lights are the cities of Tel Aviv in Israel, Amman in Jordan, and Beirut in Lebanon.

Other light clusters include the Nile Delta in Egypt, and a nearby thin string of lights revealing the Suez Canal. The more scattered lights of the Turkish coastline and the country's mountainous interior arc from top left to top center.

Populations are small in the deserts of the Middle East, so few lights appear in vast portions of Saudi Arabia (right), Syria (top center) and Iraq (top right). The largest population centers cluster where water is available, especially along the great rivers of the region, the Tigris and Euphrates. In Iraq, the capital city Baghdad stands as the brightest spot where these rivers meet.

Images such as this also show the hints of conflict. In Syria, darkness now reigns along a 300-kilometer stretch where lights use to line the Euphrates River in the east of the country. This has left most of eastern Syria in the dark.