On November 1, 1962, the Soviet Union launched the Mars 1 spacecraft on a mission to fly by the Red Planet. [‘On This Day in Space’ Video Series on Space.com](https://www.space.com/39251-on-this-day-in-space.html)
While it did end up flying by Mars, the mission was not exactly a success. After it separated from the rocket, it deployed its solar panels and started cruising toward Mars. When mission controllers were checking out the telemetry it transmitted back to Earth, they found out that Mars 1 had sprung a leak in one of the gas valves that controls the spacecraft’s orientation. And without a working orientation system, Mars 1 would have a hard time pointing its antennas in the right direction. It lost contact with Earth when it was about halfway to Mars.
While it did end up flying by Mars, the mission was not exactly a success. After it separated from the rocket, it deployed its solar panels and started cruising toward Mars. When mission controllers were checking out the telemetry it transmitted back to Earth, they found out that Mars 1 had sprung a leak in one of the gas valves that controls the spacecraft’s orientation. And without a working orientation system, Mars 1 would have a hard time pointing its antennas in the right direction. It lost contact with Earth when it was about halfway to Mars.
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