Episode Title: "FOR THE WORLD IS HOLLOW AND I HAVE TOUCHED THE SKY"
Production Number: 65
Original Air Date: 11-08-68
Stardates: 5476.3, 5476.4
The U.S.S. Enterprise encounters a spread of primitive, chemically fueled missiles moving at sublight speed, and easily destroys the missiles with its phasers, then sets a course for the missiles' origin: an asteroid 200 miles in diameter, propelled by atomic power, that is on a collision course with Daran Five, an inhabited planet with a population of 3,724,000,000. The impact will occur in about 396 days.
Dr. McCoy learns that he has terminal xenopolycythemia and has one year to live. He joins Captain Kirk and Commander Spock in transporting inside the artificial asteroid ship, whose inhabitants believe they are on the world of Yonada. Spock recognizes the writing inside the 10,000-year-old asteroid as Fabrini, a people whose sun went nova and destroyed all its planets; the inhabitants of the asteroid are the descendants of those who escaped the Fabrini sun.
Dr. McCoy chooses to remain aboard Yonada to live out the rest of his life, and Starfleet Command orders the Enterprise to continue its mission, but McCoy finds the control center of the asteroid, and Spock is able to access the ancient computer systems to alter the asteroid's course, and also finds the stored medical knowledge of the Fabrini, which he uses to cure Dr. McCoy's terminal illness.
Factoid: The asteroid will reach its intended destination world in about 390 days.
Dr. McCoy: "He's dead."
Guest Characters: Nurse Christine Chapel, *Admiral Westervliet
Alien Races: *Fabrini
KEY: [brackets]=illusions *star=first appearance