NASA’s Curiosity rover encountered an unusual setback on Mars when its drill became stuck to a large rock during a sampling operation. On April 25, 2026, while drilling into a rock named 'Atacama' in Gale Crater, the rover’s bit unexpectedly pulled the entire 28.6-pound rock off the surface. This marked the first time a rock remained attached to the drill sleeve during Curiosity’s 14-year mission.

Engineers at NASA’s Jet Propulsion Laboratory began troubleshooting using images from the rover’s front obstacle-detection cameras. Initial attempts to vibrate the drill loose failed. Over several days, the team adjusted the robotic arm’s position and tried new combinations of rotation and vibration. On May 1, a new tilt and spin maneuver finally dislodged the rock, which shattered upon hitting the ground.

Curiosity landed on Mars in August 2012 to investigate whether the planet once had conditions suitable for microbial life. It has since explored Gale Crater, including the clay-rich Glen Torridon region, where it collected samples using its onboard Sample Analysis on Mars instruments. This incident highlights the challenges of remote operations on another planet, where every action must be carefully planned and tested.