On March 29, 1974

Mariner 10 ''Mariner 10'' was an American Robotic spacecraft, robotic space probe launched by NASA on 3 November 1973, to fly by the planets Mercury (planet), Mercury and Venus. It was the first spacecraft to perform flybys of multiple planets. ''Ma ...

became the first spacecraft to fly by Mercury, that saw a spacecraft for the first and last time in the 20th century.

Launches

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January

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February

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March

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April

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May

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June

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July

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August

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September

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October

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November

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December

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Deep Space Rendezvous

EVAs

References

Footnotes

{{Orbital launches in 1974 Spaceflight by year