In a new update from NASA the object has now been identified as a natural chunk of rock rather than a piece of any manmade craft or vehicle. The team analyzed the bizarre object with a tool called the ChemCam RMI. The instrument uses a laser to sniff out the makeup of anything it’s pointed at, and the results for this particular piece of debris revealed that it’s actually just a very thin piece of rock.
NASA describes the inspection thusly:
The planning day began with an interesting result from the previous plan’s ChemCam RMI analysis of a target that was referred to as “Pettegrove Point Foreign Object Debris” (PPFOD), and speculated to be a piece of spacecraft debris. In fact it was found to be a very thin flake of rock, so we can all rest easy tonight – Curiosity has not begun to shed its skin!