Word: terrains
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...achieve lunar color photography, Jet Propulsion Laboratory scientists in Pasadena first commanded the mirror mounted above Surveyor's fixed, black-and-white television camera to swivel and tilt until it reflected the proper piece of lunar terrain into the cam era lens. By radioed signal, they start ed a filter wheel turning until a red filter was in front of the lens. Then they ordered the camera to photograph the scene. The procedure was repeated twice more, once with a green and finally with a blue filter...
...white photographs transmitted by Surveyor, before it went into hibernation last week for the 14-day lunar night, were even more remarkable. As the sun slowly sank toward the moon's horizon, the lengthening shadows cast by Surveyor itself appeared with startling clarity in shots of nearby terrain. In one picture, the 10-ft.-high spaceship's shadow stretched 50 ft. away. At sunset, the camera, aimed directly at the solar fireball, captured the brilliant halo of the sun's corona-usually invisible on earth because of the terrestrial atmosphere. After nightfall, Surveyor successfully took the last...
Pictures by Earthlight. One after another, the pictures showed that Surveyor was standing on a broad, relatively level plain littered with pebbles as small as one-eighth of an inch in diameter and rocks that were more than a foot across. The terrain was pocked by an occasional small crater, and one picture clearly showed a hump on the horizon that is believed to be either a crater rim or a low hill. A view of one of Surveyor's feet showed that its impact had dented the surface a few inches, indicating to some scientists that the site...
...grinding task of preserving the nation on the battlefields. For six days the reconnaissance helicopters of the 1st Cavalry Division (airmobile) hummed over mountaintops, darted down the alleys of valleys, recklessly trying to draw fire-which would pinpoint an enemy in the elephant grass below. It was familiar terrain: the Chu Pong massif and Ia Drang valley in the western highlands near Cambodia, the "Valley of Death," where the division last fall had fought the bloodiest battle of the war. Chu Pong was a perfect place to hit the enemy off-balance as he prepared his campaigns for the coming...
...until last November, though, did anyone offer reasonable answers. Then Consulting Geologist David Evans suggested that the quakes under the suddenly shaky Colorado terrain could be traced to a deep well at the nearby Rocky Mountain Arsenal. Military and civilian experts scoffed, but Evans backed up his theory with impressive evidence...