- Ambassador Spock plans to pilot a specialized ship, equipped with red matter, with the intent to engulf the Romulan supernova by creating an artificial black hole. (Star Trek; PIC: "Remembrance")
- The Romulan supernova begins, destroying Romulus. (Star Trek; PIC: "Remembrance")
- Spock launches red matter into the supernova, creating the artificial black hole and neutralizing the star. The resulting black hole consumes his ship along with the nearby Romulan mining vessel Narada commanded by Nero. Nero is sent 154 years into a new past while Spock is sent 129 years into that past. (Star Trek)
According to the Star Trek: Countdown comic book series, at some point before this year, Data is reincarnated in another android body, when his neural nets are successfully imprinted onto B-4's programming, and becomes captain of the USS Enterprise-E. Jean-Luc Picard becomes the Federation ambassador to Vulcan. This backstory is contradicted by Star Trek: Picard.
- Star Trek (in part)