Oh, come on. The fact that he’s molesting a giant penguin while completing the moon landing is a bit of a giveaway, don’t you think?
I think they’re genuine and the white lines are backlight halos, as others have suggested.
Another thing that makes it look wrong is the depth of field; because of the distance between the subject and the background, and because of the short depth of field that the photographer has used (presumably because he/she opened the aperture right up to get a fast shutter speed), the background is totally out of focus and the subject is sharp - but as there are no other objects visible to gauge context, it makes the subject look ‘pasted on’ to the background.