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A friendly reminder regarding spoilers! At present the expanded Trek universe is in a period of major upheaval with the finale of Year Five, the Coda miniseries and the continuations of Discovery, Picard and Lower Decks; and the premieres of Prodigy and Strange New Worlds, the advent of new eras in Star Trek Online gaming, as well as other post-55th Anniversary publications. Therefore, please be courteous to other users who may not be aware of current developments by using the {{spoiler}}, {{spoilers}} or {{majorspoiler}} tags when adding new information from sources less than six months old. Also, please do not include details in the summary bar when editing pages and do not anticipate making additions relating to sources not yet in release. 'Thank You


Memory Beta, non-canon Star Trek Wiki
The timestream.
years: 1952 1953 1954 1955 1956 1957 1958

(stardates from 1955.0)

decades: 1920s 1930s 1940s 1950s 1960s 1970s 1980s
centuries: 19th century - 20th century - 21st century

1955 was, on Earth's calendar, the 56th year of the 21st century, and the sixth year of the 1950s decade. Although this was a time period before Human formulation of stardates, this era begins with stardate 1955.0.


The aircraft carrier USS Forrestal is commissioned.[7]

Mirror universe

  • The Terran Empire of the mirror universe exists by this year, as a political party or otherwise which eventually turned into an interstellar empire.[8]

Alternate timelines


Births and deaths

Alternate timelines


References and notes


Title Series Date Media Notes Image
From History's Shadow

Chapter 10
The Original Series 14 January 1955 novel From History's Shadow cover.jpg
A Bomb in Time

Kirk's time travel
The Original Series 3 April 1955 comic Gold Key 36.jpg

Provenance of Shadows

(Timeline 2)
Chapter 52, Section 2
The Original Series 1955 novel Alternate-timetrack history of what would have occurred on Earth, had Dr. McCoy prevented Edith Keeler's death in 1930. McCoy killed by invading Nazi soldier. Crucible1.jpg

External links