There were seventy-nine (79) episodes in Star Trek TOS, which lasted from 1966 to 1969. The only character to appear in every episode was Mr Spock (played by Leonard Nimoy).
TOS lasted three seasons. A sequel was planned, called Star Trek: Phase II, but the production was halted when the broadcasting channel was closed. The script for the first episode was modified to create Star Trek: The Motion Picture.
Star Trek: The Original Series episode airdates can be found on Memory Alpha, the Star Trek Wiki.
There are 726 episodes of Star Trek in total: 79 episodes of The Original Series + 1 pilot 22 episodes of The Animated Series 178 episodes of The Next Generation 176 episodes of Deep Space Nine 172 episodes of Voyager 98 episodes of Enterprise
In Star Trek The Original Series Kirk appears in 79 episodes.
Many people think "Spock's Brain" was the worst.
Star Trek: The Original Series Star Trek: The Animated Series Star Trek: The Next Generation Star Trek: Deep Space Nine Star Trek: Voyager Star Trek: Enterprise Star Trek: Bridge Commander (TV Series)
7 Star Trek The Original Series Star Trek The Animated Series Star Trek The Next Generation Star Trek Deep Space Nine Star Trek Voyager Star Trek Enterprise Star Trek Bridge Commander (TV Series)
The Star Trek Movie from 2009 was pretty good, but personally I prefer Star Trek: The Original Series and the movies that were made to go along with the original series.
The best 'original' series episode to show someone who has no idea about "Star Trek" is the episode entitled "The Trouble with Tribbles". It captures the spirt of the original series perfectly.
Leonard Nimoy was in all eighty episodes of Star Trek .
The original Star Trek ended in 1969 as NBC cancelled the series after just 3 seasons.
The characters' names are Kirk and Spock. And, the series is called: Star Trek The Original Series. Or ST-TOS for short.
"Star Trek: The Original Series" first aired September 8, 1966 .