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NASA's Mariner 10 (pictured) became the first space probe to make a flyby of Mercury.

Historical image related to NASA's Mariner 10 (pictured) became the first space probe to make a flyby of Mercury. from March 29, 1974

NASA

American space and aeronautics agency

The National Aeronautics and Space Administration is an independent agency of the US federal government responsible for the United States's civil space program, aeronautics research and space research. Established in 1958, it succeeded the National Advisory Committee for…
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Mariner 10

First spacecraft to visit Mercury (1973–1975)

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

Spacecraft without people on board

Uncrewed spacecraft or robotic spacecraft are spacecraft without people on board. Uncrewed spacecraft may have varying levels of autonomy from human input, such as remote control, or remote guidance. They may also be autonomous, in which they have a pre-programmed list of…
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Planetary flyby

Sending a space probe past a planet or dwarf planet

A planetary flyby is the act of sending a space probe past a planet or a dwarf planet close enough to record scientific data. This is a subset of the overall concept of a flyby in spaceflight.
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Mercury (planet)

First planet from the Sun

Mercury is the first planet from the Sun and the smallest in the Solar System. It is a rocky planet with a trace atmosphere and a surface gravity slightly higher than that of Mars. The surface of Mercury is similar to Earth's Moon, heavily cratered, with expansive rupes system,…
Source: Wikipedia (CC BY-SA)