Janus VI

Janus VI is a geologically inactive planet and the homeworld of the silicon-based Horta species. The planet has no atmosphere and is rich in subterranean mineral resources, including the rare element pergium, as well as others such as uranium, cerium, platinum and gold.

The planet was colonized by humans in the 2210s, although official contact with the natives only happened more than 50 years later, in 2267.

Following some conflicts caused by the humans inadvertently destroying the Horta's eggs and the Horta attacking the colony in retaliation, peace was eventually achieved with the help of the USS Enterprise crew, after Spock managed to contact the Horta by telepathic means and the two species agreed to coexist peacefully.