Mariner 10
With the scorched inner planet of Mercury as its ultimate target, the Mariner 10 spacecraft pioneered the use of a (gravity assist) swing by Venus to bend its flight path.
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| Launch Date: |
November 3, 1973 |
| Flybys: |
Venus on February 5, 1974;
Mercury on March 29 and September 21, 1974, and March 16, 1975 |
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