Night View of India-Pakistan Borderlands (NASA, International Space Station, 08/21/11)
Editor's note: I've added this to our "NASA Views Earth at Night" Flickr photoset:
www.flickr.com/photos/28634332@N05/sets/72157625188331491/
A night time view of India-Pakistan borderlands is featured in this image photographed by an Expedition 28 crew member on the International Space Station. Clusters of yellow lights on the Indo-Gangetic Plain of northern India and northern Pakistan reveal numerous cities both large and small in this photograph. Of the hundreds of clusters, the largest are the metropolitan areas associated with the capital cities of Islamabad, Pakistan in the foreground and New Delhi, India at the top -- for scale these metropolitan areas are approximately 700 kilometers apart. The lines of major highways connecting the larger cities also stand out. More subtle but still visible at night are the general outlines of the towering and partly cloud-covered Himalayan ranges immediately to the north (left). A striking feature of this photograph is the line of lights, with a distinctly more orange hue, snaking across the central part of the image. It appears to be more continuous and brighter than most highways in the view. This is the fenced and floodlit border zone between the countries of India and Pakistan. The fence is designed to discourage smuggling and arms trafficking between the two countries. A similar fenced zone separates India's eastern border from Bangladesh (not visible). This image was taken with a 16-mm lens, which provides the wide field of view, as the space station was tracking towards the southeast across the subcontinent of India. The station crew took the image as part of a continuous series of frames, each frame taken with a one-second exposure time to maximize light collection -- unfortunately, this also causes blurring of some ground features. The distinct, bright zone above the horizon (visible at top) is produced by airglow, a phenomena caused by excitation of atoms and molecules high in the atmosphere (above 80 kilometers, or 50 miles altitude) by ultraviolet radiation from the sun. Part of the ISS Permanent Multipurpose Module, or PMM, and a solar panel array are visible at right.
Image credit: NASA
Original image:
spaceflight.nasa.gov/gallery/images/station/crew-28/html/...
More about space station research:
www.nasa.gov/mission_pages/station/research/index.html
There's a Flickr group about Space Station Research. Please feel welcome to join! www.flickr.com/groups/stationscience/
View almost 400 photos like this in the "NASA Earth Images" Flickr photoset:
www.flickr.com/photos/28634332@N05/
_____________________________________________
These official NASA photographs are being made available for publication by news organizations and/or for personal use printing by the subject(s) of the photographs. The photographs may not be used in materials, advertisements, products, or promotions that in any way suggest approval or endorsement by NASA. All Images used must be credited. For information on usage rights please visit: www.nasa.gov/audience/formedia/features/MP_Photo_Guidelin...
Night View of India-Pakistan Borderlands (NASA, International Space Station, 08/21/11)
Editor's note: I've added this to our "NASA Views Earth at Night" Flickr photoset:
www.flickr.com/photos/28634332@N05/sets/72157625188331491/
A night time view of India-Pakistan borderlands is featured in this image photographed by an Expedition 28 crew member on the International Space Station. Clusters of yellow lights on the Indo-Gangetic Plain of northern India and northern Pakistan reveal numerous cities both large and small in this photograph. Of the hundreds of clusters, the largest are the metropolitan areas associated with the capital cities of Islamabad, Pakistan in the foreground and New Delhi, India at the top -- for scale these metropolitan areas are approximately 700 kilometers apart. The lines of major highways connecting the larger cities also stand out. More subtle but still visible at night are the general outlines of the towering and partly cloud-covered Himalayan ranges immediately to the north (left). A striking feature of this photograph is the line of lights, with a distinctly more orange hue, snaking across the central part of the image. It appears to be more continuous and brighter than most highways in the view. This is the fenced and floodlit border zone between the countries of India and Pakistan. The fence is designed to discourage smuggling and arms trafficking between the two countries. A similar fenced zone separates India's eastern border from Bangladesh (not visible). This image was taken with a 16-mm lens, which provides the wide field of view, as the space station was tracking towards the southeast across the subcontinent of India. The station crew took the image as part of a continuous series of frames, each frame taken with a one-second exposure time to maximize light collection -- unfortunately, this also causes blurring of some ground features. The distinct, bright zone above the horizon (visible at top) is produced by airglow, a phenomena caused by excitation of atoms and molecules high in the atmosphere (above 80 kilometers, or 50 miles altitude) by ultraviolet radiation from the sun. Part of the ISS Permanent Multipurpose Module, or PMM, and a solar panel array are visible at right.
Image credit: NASA
Original image:
spaceflight.nasa.gov/gallery/images/station/crew-28/html/...
More about space station research:
www.nasa.gov/mission_pages/station/research/index.html
There's a Flickr group about Space Station Research. Please feel welcome to join! www.flickr.com/groups/stationscience/
View almost 400 photos like this in the "NASA Earth Images" Flickr photoset:
www.flickr.com/photos/28634332@N05/
_____________________________________________
These official NASA photographs are being made available for publication by news organizations and/or for personal use printing by the subject(s) of the photographs. The photographs may not be used in materials, advertisements, products, or promotions that in any way suggest approval or endorsement by NASA. All Images used must be credited. For information on usage rights please visit: www.nasa.gov/audience/formedia/features/MP_Photo_Guidelin...