Plural of rover: vehicles designed to explore surfaces like planets or moons, or people who travel from place to place.
From Middle English 'rover,' from 'rove' (to wander or ramble), related to Old Norse 'rof' meaning 'to rob' or 'to roam.' Originally rovers were pirates.
NASA's Mars Rovers like Perseverance use an ingenious time-delay communication system—commands must account for 20 minutes of light travel time, meaning rovers must drive almost autonomously!
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