NASA’s Curiosity Rover accidentally pulled a rock loose from the Martian surface and then spent several days trying to remove it after it became stuck in the rover’s drill system.

Newly released images show the rover dealing with the unusual situation as the rock became lodged on the drill attached to its robotic arm. After multiple attempts involving arm movements and repeated drilling actions, Curiosity finally succeeded in shaking the rock free.

Figure 1. NASA’s Curiosity Rover Uncovers Entire Rock While Drilling on Mars

The entire sequence was captured by the rover’s black-and-white hazard cameras mounted on the front of its chassis, as well as navigation cameras positioned on the rover’s mast, or “head.” Figure 1 shows NASA’s Curiosity Rover Uncovers Entire Rock While Drilling on Mars.

Curiosity Rover Accidentally Rips Rock from Mars Surface

On April 25, 2026, NASA’s Curiosity Rover collected a drill sample from a Martian rock named “Atacama.” The rock measured about 1.5 feet wide at its base, around 6 inches thick, and weighed an estimated 28.6 pounds (13 kilograms).

After the drilling process, Curiosity pulled back its robotic arm, but the entire rock unexpectedly lifted out of the surface while still attached to the fixed sleeve surrounding the rotating drill bit.

Although the rover has previously cracked or separated pieces of Martian rock during drilling operations, NASA said this was the first time a rock remained stuck directly to the drill sleeve itself. Engineers initially tried to dislodge it by vibrating the drill, but the rock refused to come loose.

NASA Engineers Spend Days Trying to Dislodge Stuck Mars Rock

On April 29, the team behind NASA’s Curiosity Rover made another effort to free the stuck “Atacama” rock by repositioning the rover’s robotic arm and reactivating the drill vibration system. Images from the sequence showed sand spilling from the rock during the process, but the rock still remained attached to the rover.

Engineers tried again on May 1 using a combination of steeper drill angles, drill rotation, vibration, and spinning of the drill bit [1]. Although the team expected multiple attempts might be necessary, the rock finally broke free during the very first test. When it hit the Martian surface, the rock fractured apart.

Curiosity Rover Mission Continues Across Mars

Curiosity was developed by NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California, which is managed by Caltech. The rover mission is operated by JPL for NASA’s Science Mission Directorate in Washington, as part of the Mars Exploration Program.

Reference:

1. https://scitechdaily.com/this-mars-rock-refused-to-let-go-of-nasas-curiosity-rover/

Cite this article:

Janani R (2026), Stubborn Mars Rock Clung to NASA’s Curiosity Rover, AnaTechMaz, pp.860