"All Our Yesterdays" is the twenty-third and penultimate episode of the third season of the American science fiction television series Star Trek. Written by Jean Lisette Aroeste and directed by Marvin J. Chomsky, it was first broadcast March 14, 1969. In the episode, Captain Kirk, Spock and Dr. McCoy are trapped in two timeframes of another ...

When the planet Sarpeidon is about to be destroyed, by its star Beta Niobe becoming a supernova, Kirk (William Shatner), Spock (Leonard Nimoy) and McCoy (DeForest Kelley) beam down and find it evacuated except for its librarian, Mr. Atoz (Ian Wolfe), tending to his replicas.

Kirk, Spock, and McCoy are trapped in a planet's distant pasts, where Spock finds love with an exiled woman. The Enterprise orbits Sarpeidon. A star shines with a reddish glow, and will soon destroy the planet orbiting it, Sarpeidon, in a supernova.

"Star Trek" All Our Yesterdays (TV Episode 1969) cast and crew credits, including actors, actresses, directors, writers and more.

Watch Star Trek — Season 3, Episode 23 with a subscription on Paramount+, or buy it on Fandango at Home.

When Kirk, Spock and McCoy investigate the disappearance of a doomed planet's population, they find themselves trapped in different periods of that world's past. Captain Kirk's insane ex-lover Dr. Janice Lester forcibly switches bodies with …

The third and final season of the American science fiction television series Star Trek, premiered on NBC on Friday, September 20, 1968 and concluded on Tuesday, June 3, 1969. It consisted of twenty-four episodes.

S3 E23: Kirk, Spock and McCoy enter a time portal and get stuck in the past on a planet about to be consumed by a nova. Is There In Truth No Beauty? The iconic series "Star Trek" follows the crew of the starship USS Enterprise as it completes its missions in space in the 23rd century.

S3 E23: Kirk, Spock and McCoy enter a time portal and get stuck in the past on a planet about to be consumed by a nova. 1969. 48 min. TV-PG. United States. English (United States) (⁨Dolby 5.1⁩, AAC) English (CC) Closed captions (CC) refer to subtitles in the available language with the addition of relevant non-dialogue information.

Episode Guide for Star Trek 3x23: All Our Yesterdays. Episode summary, trailer and screencaps; guest stars and main cast list; and more.