Goals: Like its predecessor, Mars 1 was a stripped down spacecraft intended more as an engineering test than a scientific mission. The spacecraft was equipped with a camera to snap photos during a Mars flyby and a magnetometer to study interplanetary space.

Accomplishments: Mars 1 was the first spacecraft launched by any nation to fly past Mars. Unfortunately, a malfunction in the spacecraft's attitude control system made maneuvering the spacecraft impossible and controllers eventually lost contact with the spacecraft. The inert spacecraft flew past Mars a few months later at a distance of 197,000 km (122,400 miles). Before contact was lost, scientists collected useful data on cosmic rays, magnetic field, micrometeoroid impacts and ionized gases.

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