Sunset over Western South America

The changeover between day and night is marked by the terminator, a line on Earth's surface separating the sunlit side from the darkness.

---

Astronaut photograph ISS027-E-12224 was acquired on April 12, 2011, with a Nikon D3S digital camera using a 50 mm lens, and is provided by the ISS Crew Earth Observations experiment and Image Science & Analysis Laboratory, Johnson Space Center. The image was taken by the Expedition 27 crew. The image has been cropped and enhanced to improve contrast. Lens artifacts have been removed. The International Space Station Program supports the laboratory as part of the ISS National Lab to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth. Caption by William L. Stefanov, NASA-JSC.

Published April 25, 2011
Data acquired April 12, 2011

Source:

ISS > Digital Camera

Collection:

Astronaut Photography