Prime Timeline
| Year |
Event |
| 3,750 bc |
● [1]
An ice age begins on the planet Sigma Draconis VI. The inhabitants construct underground shelters for its population but only the females move into these, leaving the males on the surface. Both groups lose all understanding of their technology over the next few thousand years. [1]
|
Colour key
● - Shows the canon status and reference of the year for this event
References
| # |
Series |
Season |
Source |
Comment |
| 1 |
TOS |
3 |
Spock's Brain |
Spock described the event as happening 6,000 years ago. This is a rounded date |
