https://thenextweb.com/space/2021/03/18/mars-rover-captures-mysterious-scratching-noise-during-drive-across-the-red-planet/

NASA’s Perseverance rover has captured a mysterious high-pitched scratching noise on the surface of Mars.

The sounds were recorded as the rover drove along the Jezero Crater, an area that scientists believe was once flooded with water and home to an ancient river delta.