Satellite Imagery Gallery

Pale Blue Dot, Voyager 1 image

This unique narrow-angle color image is of the Earth, dubbed Pale Blue Dot, is a part of the first ever portrait of the solar system taken by Voyager 1. The spacecraft acquired a total of 60 frames for a mosaic of the solar system from a distance of more than 4 billion miles from Earth and about 32 degrees above the ecliptic. From Voyager's great distance Earth is a mere point of light, less than the size of a picture element even in the narrow-angle camera. Earth was a crescent only 0.12 pixel in size. Coincidentally, Earth lies right in the center of one of the scattered light rays resulting from taking the image so close to the sun. This blown-up image of the Earth was taken through three color filters -- violet, blue and green -- and recombined to produce the color image. The background features in the image are artifacts resulting from the magnification

© NASA/SCIENCE PHOTO LIBRARY

North America at night, satellite image

Africa at night. Satellite image of the Earth at night, set against a background of stars, centred on the continent of Africa. North is at top. City lights (yellow) show areas of dense population. Most of Africa is dark in comparison with the bright lights of the cities of Europe and the Middle East (across top). Rural and undeveloped areas in Africa include the vast Sahara desert in the north, tropical forests in central Africa, and the savannah and deserts of eastern and southern Africa. City lights seen outside Africa and Europe include part of South America (lower left), India (upper right) and islands in the Atlantic and Indian oceans. Image data obtained in 2001 by the Defense Meteorological Satellite Program (DMSP)

© NASA/NOAA/SCIENCE PHOTO LIBRARY

Columbia Glacier, Alaska, 1989

Columbia Glacier, Alaska. False-colour satellite image of the Columbia Glacier, Alaska, USA, taken in 1989. Columbia Glacier descends from an ice field (top) 3, 050 metres above sea level, down the flanks of the Chugach Mountains, and into a narrow inlet that leads into Prince William Sound (bottom centre) in southeastern Alaska. It is one of the most rapidly changing glaciers in the world. Snow and ice appears bright cyan, vegetation is green, clouds are white or light orange, and the open ocean is dark blue. Exposed bedrock is brown, while rocky debris on the glacier's surface is gray. Between 1980 and 2011 the glacier had retreated 20 kilometres north and lost roughly half its thickness and volume. Imaged by NASA's Landsat satellites, on 26th June

© NASA/SCIENCE PHOTO LIBRARY