Earth from Space – Night turns to day

The Mediterranean region at night

The Mediterranean region, illuminated by manmade lights and natural sources (moonlight, starlight etc).

ONE OF THE EXPEDITION 29 crewmembers aboard the International Space Station took this oblique angle photo showing the Mediterranean Sea area, including the Nile River and the river’s delta, and the Sinai Peninsula, on October 15, 2011. Cyprus is visible at left.

At first look, the image appears to have been photographed in daylight, but actually it was taken in the early hours of the morning, local time.

Some areas of the photo like the river and river delta appear as the brightest areas because of either man-made lighting (mostly incandescent) or man-made lighting reflected off nearby surfaces.

The rest of the region is illuminated naturally by moonlight, starlight, or back-scattered light from the atmosphere.

Also visible is a green band following the curve of the horizon. This is airglow.

Below is another, slightly wider view.

Download full-size, high-resolution versions of the images:

Image 1

Image 2

The Mediterranean region at night

A wider view photographed at roughly the same time.

Adapted from information issued by NASA.

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