Mars flyby

Data collected from Mariner 4's flyby on a modern map
This shows two of the frames from the Mariner 4 flyby projected over a grid

A Mars flyby is a movement of spacecraft passing in the vicinity of the planet Mars, but not entering orbit or landing on it. Uncrewed space probes have used this method to collect data on Mars, as opposed to orbiting or landing. A spacecraft designed for a flyby is also known as a "flyby bus" or "flyby spacecraft".

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