ugly, deformed, noisy, blurry, distorted, out of focus, bad anatomy, extra limbs, poorly drawn face, poorly drawn hands, missing fingers, nudity, nude
Exclude any overly detailed background elements like mountains or craters.
Don't include intricate details on the rovers or machinery. Simple silhouettes will suffice.
Skip showing people inside the domes. Focus on the glow of activity. Clouds or any atmosphere phenomenon.