How are evil alien species in science fiction different from good ones?

The differences between high - temperature aliens and other alien species in science fiction are quite significant. High - temperature aliens are typically associated with heat - based powers and abilities. They might be able to travel through lava or withstand the heat of a star's corona. Other alien species may not have such heat - related capabilities. Their evolution paths are also different. High - temperature aliens have evolved in a high - heat environment, which has shaped their biology, behavior, and technology in ways that are completely different from aliens that have evolved in other environmental conditions.

Well, they are often depicted as having a menacing appearance. For example, they might have sharp teeth, large claws, and strange, glowing eyes. Their motives are usually about conquest, like taking over Earth for its resources. They also tend to have advanced, but cruel technology, such as weapons that can cause mass destruction.

Alien species in science fiction are frequently designed to contrast with human values and cultures. Their social structures can be vastly different. For instance, they could have a hive - mind where individuals have no concept of self - identity as we do. Their technology might be based on principles that are alien to us, like using biological functions for energy production instead of mechanical means. Appearance - wise, they may be inspired by real - life organisms but exaggerated to an extreme. For example, an alien might look like a giant insect with wings that can generate electromagnetic fields for communication. These depictions not only fuel our imagination but also make us reflect on our own humanity and place in the universe.

Well, a lot of science fiction depicts alien species in relation to our own fears and desires. For example, some million alien species might be shown as extremely aggressive, representing our fear of the unknown. On the other hand, some are presented as highly intelligent and benevolent, which could be a projection of our hope for something better out there in the universe.

Science - fiction humans may have different genetic makeups. In some stories, they are genetically engineered to be more intelligent or stronger. For example, in the 'Gattaca' movie, the genetically - modified humans have advantages over the 'natural' ones. They are taller, more resistant to diseases, etc. Also, in terms of reproduction, some science - fiction species of human may have unique ways. For example, in some alien - human hybrid concepts, the way of passing on genes is different from normal human sexual reproduction.

One common motive is conquest. They want to take over planets, including Earth, for resources or to expand their territory.

Stereotypes in science fiction can lead to one - dimensional portrayals of different species. For example, making all aliens in a story look menacing and war - like. This can limit the exploration of the rich diversity that could exist among extraterrestrial beings.

Science - fiction rebreathers are frequently depicted with capabilities far beyond what real - life rebreathers can do. Real - life rebreathers are mainly used for specific activities like diving. But in science fiction, rebreathers can be used in all kinds of strange environments, like on a gas - giant planet or in a toxic - fog - filled alien city. They may also have features like automatic self - repair or infinite air - recycling capacity which are not present in real - life models.

Species in exotic science fiction often have abilities that are far beyond what real - life species possess. For example, some can fly without any visible means of propulsion, like the Moya crew in 'Farscape'. Real - life species are bound by the laws of nature we know, but in science fiction, these species can break those rules.

One of the best alien species in fiction is the Vulcans from 'Star Trek'. They are known for their logical thinking and unique culture. Their pointed ears and green blood make them distinct. Another great one is the Na'vi from 'Avatar'. They have a deep connection with their planet Pandora and their blue - skinned, large - eyed appearance is very striking. Also, the Daleks from 'Doctor Who' are quite memorable. They are robotic - like aliens with a strong desire for conquest and a distinct 'Exterminate!' catchphrase.