Yonada

Yonada was a multi-generational worldship that was built in the thousands of years ago by the Fabrini, when they realized that their home star was about to enter a nova phase and would eventually destroy all life on Fabrina. Yonada was constructed out of a hollowed-out asteroid and was sent on a computer-controlled course to a habitable planet light-years away with thousands of Fabrini residing inside her.

Over the centuries of travel, Yonada 's computer, known as the "Oracle", had degraded and the worldship's course altered from an orbital course for Daran IV, to a collission course with Daran V. Meanwhile, the Fabrini had forgotten that they were on a spaceship and soon developed a religion around the "Oracle" and its mission to find them a new world.

In 2269, the USS Enterprise (NCC-1701) encountered the worldship when it was fired upon by the automated defense systems of the Yonada. A landing party consisting of Captain Kirk, Spock, and Dr. McCoy helped Natira, the leader of the Yonada colonists, to understand that their world was actually a ship, and corrected the worldship's course to its intended destination. (TOS episode: "For the World is Hollow and I Have Touched the Sky").

In 2270, Yonada arrived in orbit and the population moved down to establish a colony on Daran IV, with assistance from the Federation. Yonada was kept in orbit of Daran IV, but proved a symbol for some who wished to return to the old ways of worshipping the "Oracle". (TOS novels: The Lost Years and Ex Machina).