Viking I
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The Mars Spacecraft
Mars.!!! However, spacecraft have landed on Venus, but the atmosphere on Venus is such that spacecraft are crushed/collpase. So no exploration has been done on Venus.
NASA's Viking 1 and Viking 2 landed on Mars in 1976.
Mariner 4
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Humans, no. Unmanned spacecraft, yes.
Many American spacecraft have reached Mars. All were unmanned, however.
The Mars Spacecraft
The Mariner 1 spacecraft was unmanned spacecraft to fly to mars
Mars
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Mars.!!! However, spacecraft have landed on Venus, but the atmosphere on Venus is such that spacecraft are crushed/collpase. So no exploration has been done on Venus.
The spacecraft that landed on Mars in the 1970s was the Viking 1 Lander. It was the first spacecraft to have landed on Mars on July 20, 1976.
Eight years depending on where in orbit they are and speed the craft is going
The first pictures captured by a spacecraft from the vicinity of Mars and beamed back to Earth were received on Oct 1, 1965 from the U.S. Mariner 4 spacecraft.
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