Alien photobomb

There I was minding my own business on bonfire night when I stumbled across a SPACESHIP!!!

Obviously I grabbed my camera to get a picture to sell to the papers publish on blip...
...then there was an "oooooohhhhhh" and I got photobombed!


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Ok, so it's actually the smoke detector that needs its battery replacing.
The photobombing alien's obviously real though...