NASA’s Mariner 9 became the first spacecraft to orbit another planet when it entered Mars’ orbit.
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The mapping of Mars' surface began.
Viking I lands on Mars.
NASA launched the Mariner 4 space probe on a mission to Mars.
NASA declared the conclusion of the Phoenix mission after contact was lost with the Phoenix lander.
NASA launched the Phoenix spaceship from the Cape Canaveral Air Force Station, Florida, US.
