Screen Rant

Spock's time travel in the 2009 J. J. Abrams Star Trek movie creates a new timeline. 1 / 7

But this is only the tip of the iceberg. 2 / 7

Spock's attempts to prevent a supernova were rejected by the Romulans and Vulcans. 3 / 7

Only Eric Bana's Nero believed him, and the two teamed up. 4 / 7

But when Spock failed, Nero's family died. Spock broke his pledge, in Nero's eyes. 5 / 7

This helps Nero feel like a more rounded villain, with stronger motivations. 6 / 7

And could play into Star Trek: Picard, since Jean-Luc was involved too. 7 / 7