Ktarians
The Ktarians are a fictional alien species from the Star Trek universe, first appearing in the television series Star Trek: The Next Generation. They are a sentient, silicon-based life form originating from the planet Ktaria. Ktarians are known for their crystalline appearance, with bodies composed of multifaceted, semi-translucent structures. Their biology is significantly different from carbon-based life, allowing them to survive in environments that would be hostile to most other species.
Their society is highly structured and technologically advanced. Ktarians possess a unique form of communication that