Habitats
- Alien Zoo, a zoo where humans are kept as exhibits.
- Arcologies—enormous habitats (hyperstructures) of extremely high human population density
- Domed city
- Endemic
- Exploring alien habitats.
- Floating City
- Seasteading & Ocean colonization
- Pirate utopia
- Reality Television
- An Earth-bound reality game where losing contestants are killed.
- The protagonist discovers their life has been one big reality television show for aliens.
- Space colonization
- Terraforming
- List of largest known stars & List of most luminous stars
- Underground city
- Walking City
Read more about this topic: List Of Science Fiction Themes