A rock containing many smaller round stones could indicate that there was once a large amount of liquid water on the Red Planet.

NASA has found a rock on Mars that it has dubbed Skull Hill. The rock is known as a "float rock," and NASA has no idea where it came from.

Perseverance just stumbled upon one of Mars’ weirdest rocks yet—a formation covered in dark, spherical shapes with mysterious textures that have scientists buzzing. While similar Martian spheres have been seen before,