Generate me a prompt for Stable Diffusion portraying a digital painting an enormous ufo spaceship in the sky far away. in the distance. concept art by simon stalenhag and peter mohrbacher 
a digital painting an enormous ufo spaceship in the sky far away. in the distance. concept art by simon stalenhag and peter mohrbacher cgsociety, speedpainting, apocalypse art. unreal engine. hyper-realistic. photo realistic. 3d render. octane render. detailed masterpiece. extreme wide shot.