File:Space Shuttle Atlantis in the sky on July 21, 2011, to its final landing.jpg
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English: Like a comet streaking across the atmosphere, the Space Shuttle Atlantis left space for the final time on July 21, 2011, descending to a smooth landing at NASA’s Kennedy Space Centre in Florida. This astronaut photograph, taken from the vantage of the International Space Station (ISS), shows the streak of an ionized plasma plume created by the shuttle’s descent through the atmosphere.
At the time of the image, the ISS was positioned northwest of the Galapagos Islands, while Atlantis was roughly 2,200 kilometers (1,367 miles) to the northeast, off the east coast of the Yucatan Peninsula. The maximum angle of the shuttle’s descent was roughly 20 degrees, though it appears much steeper in the photo because of the oblique viewing angle from ISS. Parts of the space station are visible in the upper right corner of the image.In the background of the image, airglow hovers over the limb of the Earth. Airglow occurs as atoms and molecules high in the atmosphere (above 80 kilometers, or 50 miles altitude) release energy at night after being excited by sunlight (particularly ultraviolet) during the day. Much of the green glow can be attributed to oxygen molecules.
|Date||21 July 2011|
|Source||http://earthobservatory.nasa.gov/IOTD/view.php?id=51486 ( direct link)|
|Author||NASA/ISS Expedition 28|
|This image or video was catalogued by Johnson Space Centre of the United States National Aeronautics and Space Administration (NASA) under Photo ID: ISS028-E-018218.
This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing for more information.
|Public domainPublic domainfalse|
|This file is in the public domain because it was created by the Image Science & Analysis Laboratory, of the NASA Johnson Space Centre. NASA copyright policy states that "NASA material is not protected by copyright unless noted". ( NASA copyright policy page or Conditions of Use of Astronaut Photographs).
Photo source: ISS028-E-18218.
|Camera manufacturer||NIKON CORPORATION|
|Camera model||NIKON D3S|
|Exposure time||8/5 sec (1.6)|
|ISO speed rating||10,000|
|Date and time of data generation||09:42, 21 July 2011|
|Lens focal length||24 mm|
|Number of components||3|
|Horizontal resolution||240 dpi|
|Vertical resolution||240 dpi|
|Data arrangement||chunky format|
|Software used||Adobe Photoshop CS4 Windows|
|File change date and time||13:41, 22 July 2011|
|Date and time of digitizing||09:42, 21 July 2011|
|Maximum land aperture||3 APEX (f/2.83)|
|Flash||Flash did not fire|
|Sensing method||One-chip colour area sensor|
|Custom image processing||Custom process|
|Exposure mode||Manual exposure|
|White balance||Auto white balance|
|Digital zoom ratio||1|
|Focal length in 35 mm film||24 mm|
|Scene capture type||Standard|
|Subject distance range||Unknown|
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