alien futuristic city with extraterrestrial people and high technological buildings in the background (et civilization)

alien aliens extraterrestrial extraterrestrials et ets race universe universal cosmos cosmic galaxy galactic scifi science fiction space planet planets starseed starseeds consciousness spirituality spiritual being beings otherworld otherworldly unique dimension dimensions density densities interstellar interplanetary ufop intelligent stars united federation futuristic advanced high higher expanded realm realms world worlds existence reality civilization enlightenment enlightening enlightened city cities building buildings tall crowd people tech technology technological holographic