Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2000 November 27
This is what the
looks like at night.
Can you find your favourite
Surprisingly, city lights make this task quite possible.
lights highlight particularly developed or
populated areas of the Earth's surface,
including the seaboards of Europe,
United States, and
large cities are located near
so that they can exchange goods cheaply by boat.
dark areas include the central parts of South America, Africa,
The above image is actually a composite of
hundreds of pictures made by the orbiting
(Editor's note: Contrary to some recent press reports, this site does not have a rotating screensaver version of the above image. Also, unfortunately, we do not sell prints. However, a high-resolution digital version of the image is available (click here or here) and an Earth at Night poster similar to this image can be ordered (click here) from other web sites.
Authors & editors:
Jerry Bonnell (USRA)
NASA Technical Rep.: Jay Norris. Specific rights apply.
A service of: LHEA at NASA/GSFC
& Michigan Tech. U.