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发帖数: 1285 | 1 Explanation: This panorama of the cratered lunar surface was constructed from
images returned by the US Surveyor 6 lander. Surveyor 6 was not the first
spacecraft to accomplish a soft landing on the Moon ... but it was the first
to land and then lift off again! After the spacecraft touched down near the
center of the Moon's nearside in November of 1967, NASA controllers commanded
it to hop. Briefly firing its rocket engine and lifting itself some 4 meters
above the surface, the Surveyor moved ab |
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