NASA lost contact with the Mars Observer spacecraft.
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Saturn, Jupiter, and Mars came into alignment. Medieval scholars believed this phenomenon brought forth the Black Death.
NASA's Ingenuity helicopter took off for its 72nd and final flight on Mars.
NASA's Mariner 9 became the first spacecraft to orbit another planet when it entered Mars' orbit.
NASA launched the Mariner 4 space probe on a mission to Mars.
NASA's Opportunity Mars rover launched from the Florida Cape Canaveral Space Force Station.
