Here is a composite shot from Death Valley National Park that was published in a magazine few years ago. A composite shot is when two images are combined in Photoshop, or exposed in the same frame.
I took the first shot with a wide-angle lens after the sun had set in Death Valley – the first shot is exposed it for the foreground. A few minutes later, the moon came up over the mountains. I took another shot with a longer lens… this one exposed properly for the moon. When I returned home, I combined them in Photoshop.
Why does this combination of a wide-angle shot and a shot taken with a zoom lens work? Because there are no familiar objects to give the brain visual reference about size and distance (such as a house, a tree, or a human being).