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"extract": "The Surveyor program was a NASA program that, from June 1966 through January 1968, sent seven robotic spacecraft to the surface of the Moon. Its primary goal was to demonstrate the feasibility of soft landings on the Moon. The Surveyor craft were the first American spacecraft to achieve soft landing on an extraterrestrial body. The missions called for the craft to travel directly to the Moon on an impact trajectory, a journey that lasted 63 to 65 hours, and ended with a deceleration of just over three minutes to a soft landing.",
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"extract": "Surveyor 1 was the first lunar soft-lander in the uncrewed Surveyor program of the National Aeronautics and Space Administration. This lunar soft-lander gathered data about the lunar surface that would be needed for the crewed Apollo Moon landings that began in 1969. The successful soft landing of Surveyor 1 on the Ocean of Storms was the first by an American space probe on any extraterrestrial body, occurring four months after the first soft Moon landing by the Soviet Union\u0027s Luna 9 probe.",
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"extract": "\n\nOceanus Procellarum is a vast lunar plain on the western edge of the near side of the Moon. It is the only one of the lunar plains to be called an \"Oceanus\" (ocean), due to its size: Oceanus Procellarum is the largest lunar plain, stretching more than 2,500\u00a0km (1,600\u00a0mi) across its north\u2013south axis and covering roughly 4,000,000\u00a0km2 (1,500,000\u00a0sq\u00a0mi), accounting for 10.5% of the total lunar surface area.",
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"text": "Surveyor program: Surveyor 1 lands in Oceanus Procellarum on the Moon, becoming the first U.S. spacecraft to soft-land on another world.",
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"text": "Surveyor program: Surveyor 1 lands in Oceanus Procellarum on the Moon, becoming the first U.S. spacecraft to soft-land on another world.",
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