What are the common roles of aliens in science fiction?

Another motive could be survival. If their home planet is dying, they might be looking for a new place to live. This is seen in some stories where the aliens are refugees seeking a new home, but their arrival often causes conflict with humans.

Yes, aliens are a super common theme. You see them in all sorts of sci-fi movies, books, and shows.

One common role is that of the helper. Synths are often made to assist humans in various tasks, like household chores or complex scientific research. They can do repetitive work with great precision.

Ceres can be a place of refuge in science fiction. When the main planets are in chaos or under attack, Ceres could be a haven for those fleeing. It's presented as a place where people can start anew, away from the problems of the more well - known planets.

Monsters in science fiction often serve as antagonists. They are there to create conflict for the main characters. For instance, in 'Godzilla' movies, Godzilla is a huge monster that attacks cities, and the heroes have to find a way to stop it.

One common theme is the first contact scenario. It explores how humans would react when encountering alien species for the very first time. Another theme is the invasion by aliens, like in 'War of the Worlds', where aliens come to Earth with the intention of taking over. Also, there's the theme of cooperation. Sometimes, in these stories, humans and aliens team up to face a common threat or achieve a common goal.

One common theme is the influence of aliens on human civilization. For example, how they might have helped build ancient monuments or taught humans advanced knowledge.

One common theme is the encounter between humans and aliens. This can range from friendly exchanges like sharing technology and culture, to hostile invasions. Another theme is the exploration of different forms of life. Aliens in these stories often have unique physical characteristics and ways of living. For example, they might be silicon - based instead of carbon - based like humans. Also, the concept of the unknown and the fear it brings is a theme. Humans are often afraid of the unfamiliar nature of aliens at first.

Flying is a very common ability. It allows them to quickly move around in their environments, whether it's a planet with a thick atmosphere or in space stations with large open areas.

Some aliens in science fiction books possess the power of shape - shifting. They can change their form to blend in with their surroundings or imitate other beings. This is a useful power for infiltration or survival. Additionally, advanced technology can be considered a power. Aliens may have the ability to travel through time and space using their highly - advanced ships, as seen in the 'Star Trek' series of books.