Star Trek, J.J. Abrams' 2009 reboot of Gene Roddenberry's fictional universe created some significant changes, and here are the biggest differences between the Prime and Kelvin timelines. Following the devastating destruction of Romulus, an embittered miner named Nero (Eric Bana) traveled back in time, attacking the USS Kelvin and creating an alternate Star Trek reality. The consequences of this event continued to ripple throughout the so-called Kelvin timeline for decades, meaning that history progressed similarly to established Star Trek canon, but with some major changes.
Two of the biggest changes was how Nero's attack on the USS Kelvin impacted a young James T. Kirk (William Shatner), and how it considerably changed the character of Spock (Zachary Quinto). However, there are other huge changes to the timeline that go much further than just the original 2009 film. Here are the 12 biggest ways that Star Trek differs in the three J.J. Abrams movies.