NASA's Mars Perseverance rover captured this (low resolution) image using its onboard Left Navigation Camera (Navcam) on 3/1/2021 (Sol 9).
The image shows something in the Martian sky that doesn't look natural.
The object is not a speck of dust on the camera lens since 4 images taken at the same time show that the object only appears in the third image.
It looks like there is something flying in the sky. Could the object be of alien origin?
Link below, check out Sol 9.