New Delhi: NASA’s famed Mars rover Curiosity found itself in an unusual and risky situation after a massive Martian rock became stuck to its robotic drill arm, temporarily halting operations for nearly a week on the Red Planet.
The incident began on April 25 when Curiosity drilled into a rock nicknamed “Atacama” during a routine sampling mission on Mars. According to NASA, the rock measured roughly 1.5 feet across, about six inches thick, and weighed nearly 29 pounds (13 kilograms).
Got something weighing you down? Shake it off (like Curiosity)!
— NASA Mars (@NASAMars) May 5, 2026
The Martian explorer unintentionally picked up a rock while drilling a recent sample, but the team was able to dislodge it by having the rover move its robotic arm and vibrate the drill until the rock fell off. pic.twitter.com/LnLYjIBW2H
Problems started when the rover attempted to retract its robotic arm after drilling. Instead of separating cleanly, the entire slab of rock lifted off the Martian surface and remained firmly attached to the drill sleeve — something mission engineers said had never happened before in Curiosity’s mission history.
NASA engineers grew concerned because the rover’s drill is one of Curiosity’s most critical scientific tools. Any serious damage to the arm or drill mechanism could have jeopardized ongoing exploration activities on Mars.
Teams at NASA’s Jet Propulsion Laboratory first attempted to free the rock by vibrating the drill, but the effort failed to dislodge it. Days later, engineers tried repositioning the robotic arm and repeating the vibrations. Images captured by Curiosity showed sand falling from the rock, but the slab still refused to detach.
Finally, on May 1, engineers attempted a more aggressive maneuver by tilting, rotating, vibrating, and spinning the drill simultaneously. The strategy worked almost immediately, with the rock finally breaking free and shattering after falling back onto the Martian surface.
NASA later released imagery and GIFs showing the dramatic sequence captured by Curiosity’s onboard hazard and navigation cameras.
Curiosity, which landed on Mars in 2012, continues to explore Gale Crater in search of clues about the planet’s ancient environment and whether it may once have supported microbial life. Despite the latest scare, the rover appears to have escaped the ordeal without any lasting damage.
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