NRB_458574869EDR_F0390444NCAM00295M

Are we certain this isn't some kind of reference point added to the image for whatever reason? This is suspiciously straight in alignment, as though it were added in Paint.

Little green men coming over to mess up your corn field

That's from the right navigation camera of the curiosity rover. There is also an image from the left navigation camera taken at the exact same time and it shows nothing. The timestamp for both images is (2014-07-14T02:06:13.000Z).

https://mars.nasa.gov/msl-raw-images/proj/msl/redops/ods/surface/sol/00688/opgs/edr/ncam/NLB_458574869EDR_F0390444NCAM00295M_.JPG

What am i supposed to be seeing here

Edit: nvm hard to see on mobile without zooming in. Its the 6 pixels in the sky.

I mean there is a drone up there now, they probably took it on purpose

That's just a balloon...oh wait no uhhh it's a drone...oh wait no it's uhhh a bug on the lens....oh wait no uhh swamp gas