Here’s how it works. Mariner 10 was the first spacecraft to visit Mercury. It showed close-up pictures of the sun's closest planetary neighbor and also did investigations of Mercury's ...

Fifty years ago, humanity gained its first up-close glimpse of this battered world when NASA’s Mariner 10 spacecraft made the first of three Mercury encounters. Its seven science instruments ...

NASA’s Mariner 10 became the first space probe to fly by Mercury on March 29, 1974. It was launched on November 3, 1973, approximately two years after Mariner 9 and was the last spacecraft in the ...

1975: Mariner 10, the first spacecraft to visit two planets, completes its third and final fly-by of Mercury. Mariner 10, the last of the Mariner family, launched on Nov. 3, 1973 from Cape ...