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NASA's Mariner 10 becomes the first space probe to fly by Mercury.
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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…Source: Wikipedia (CC BY-SA)
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.Source: Wikipedia (CC BY-SA)
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…Source: Wikipedia (CC BY-SA)
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)
March 29
Day of the year
March 29 is the 88th day of the year in the Gregorian calendar; 277 days remain until the end of the year.Source: Wikipedia (CC BY-SA)