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The United States National Space Science Data Center catalogued 157 spacecraft placed into orbit by launches which occurred in 1968. The first crewed Apollo...53 KB (104 words) - 13:08, 13 May 2024
 | The United States National Space Science Data Center catalogued 157 spacecraft placed into orbit by launches which occurred in 1968. The first crewed Apollo... 53 KB (104 words) - 13:08, 13 May 2024 |