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After more than 18 years of service, the first Applications Technology Satellite (ATS-1) has failed to respond to commands to correct its eastward drift from geostationary position over the Gilbert Islands in the western Pacific, according to the National Aeronautics and Space Administration (NASA). ATS-1 provided the first transmission of full-earth, cloud cover pictures from geosynchronous orbit, the forerunners of the hemispheric weather pictures seen on television today. The satellite also provided the first transmission of real time television pictures from the mid-Pacific in 1967, when it relayed pictures of the Apollo 4 splashdown.