The Mars Helicopter That Refused to Stop Flying

Engineers gave this four-pound helicopter five flights. It flew seventy-two, on a planet where flight should have been impossible.

Mars air is under one percent as thick as Earth's. To get lift, Ingenuity's blades had to spin near 2,500 times a minute, five times faster than a helicopter on Earth.

It launched under the Perseverance rover in 2021. The plan was modest: five short hops over thirty days to prove flight was possible. Instead, Ingenuity flew for almost three years, scouting trails for the rover and logging over two hours in the sky. Every flight was solo. Radio takes minutes to reach Mars, so the helicopter had to take off, navigate, and land on its own.

It ended in January 2024, when a hard landing snapped the tips off its blades. A machine built for five flights had flown fourteen times farther than planned, rewriting what a rotor could do on another world.

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