What are the common ship types in science fiction?

One common theme is isolation. People on world ships are often cut off from the rest of humanity, like in 'The Expanse' where the distances between colonies and Earth are so vast. Another theme is the self - sufficiency of these ships. They need to have their own ecosystems, energy sources etc. For example, in many stories, they have advanced hydroponics systems to grow food.

Platinum is another metal that appears in science fiction. It could be used in advanced medical devices in a futuristic setting. Also, fictional metals like unobtainium are common. Unobtainium is often used to represent a metal that has ideal but currently unachievable properties, like being a perfect conductor or having the ability to defy gravity, which drives the plot in many science fiction stories as characters strive to obtain or understand it.

One planet type is the volcanic planet. It has a high level of volcanic activity, with lava flows and a very hot and unstable environment. Mercury in our solar system has some similarities but in science fiction, they can be much more extreme. Another is the artificial planet, created by an advanced civilization. These can have all sorts of incredible structures and technologies. They might be self - sustaining habitats or even weapons platforms in some stories.

There are many common character types in science fiction. One is the heroic scientist, like Dr. Ellie Arroway in 'Contact'. They are intelligent, curious, and often on a quest for knowledge or to save the world. Another type is the space adventurer, for example, Han Solo from 'Star Wars'. They are brave, often a bit of a rogue, and skilled in combat and flying spaceships. There are also the alien characters which can range from menacing invaders like the Xenomorphs in 'Alien' to the more benevolent ones like E.T.

The common types include telepathy, which is the ability to read or communicate with minds. Telekinesis is also popular, where one can move objects with the mind. And there's precognition, being able to see future events.

In science fiction, conflict often arises between different ideologies. For instance, in 'Star Trek', the Federation's ideology of peace, exploration and cooperation sometimes clashes with other species' more aggressive or self - interested views. Also, there can be environmental conflicts. In some post - apocalyptic sci - fi stories, survivors have to deal with the conflict of a ruined environment that's hostile to life, like in 'Mad Max' movies.

Well, the most common types of science fiction are space opera, where adventures take place in vast cosmic settings, and time travel stories that explore the possibilities of going back and forth in time. Another type is post-apocalyptic, imagining worlds after a major catastrophe.

One common type is synthetic food. It's created in labs using advanced technology. This is often seen in stories where natural resources are scarce.

One common type is the sound of futuristic weapons. Like the zapping sound of a laser gun. Another is the mechanical noises of robots or androids, such as whirring gears and beeping sensors.