Memory Alpha
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Memory Alpha

A PADD showing Kirk and Spock from the "TOS era"

TOS era was a colloquial reference to the 2260s made by Commander Jack Ransom of the USS Cerritos. He said that it referred to "'those old scientists' – You know, Spock, Scotty, those guys. Seems like they were stumbling on crazy new aliens every week back then." (LD: "No Small Parts")

Star Trek: The Original Series is often referred to as "TOS" by fans. This is a meta reference to the fact that the Original Series would encounter new aliens on each new show, which aired weekly.
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