4. The Greater Himalayas

Expert comments: "A hand-held large format camera's frame from the STS41-G/space shuttle Challenger mission provides a southwestern view of the Greater Himalayas bordering the Karakoram Range, whose great peaks are near the lower left edge of the frame. India is in the upper left; Pakistan, at lower right; and China is in the lower left foreground. The valley of the Indus River is in the right bottom corner. This particular frame was popular, not so much for its scientific contributions as for its sheer panoramic beauty. The image was made into a jigsaw puzzle in the mid-80s that was snatched up by puzzle fanatics around the world." Full caption: http://spaceflight.nasa.gov/gallery/images/shuttle/sts-41g/html/41g-120-0009.html