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Data acquired July 25, 2009 720 x 480 JPEG
Data acquired July 25, 2009 1440 x 960 472 KB - JPEG
Data acquired July 25, 2009 JPEG
Taken July 25, 2009, this astronaut photograph shows the concentric rings of Aorounga Impact Crater in north-central Chad.
Astronaut photograph ISS020-E-26195 was acquired on July 25, 2009, with a Nikon D3 digital camera fitted with an 800 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 20 crew. The image in this article has been cropped and enhanced to improve contrast. Lens artifacts have been removed. The International Space Station Program supports the laboratory 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 August 10, 2009 Data acquired July 25, 2009