Given the shared creative teams, it's unsurprising that there are numerous crossovers between Star Trek and the Battlestar Galactica reboot, but the connections go back even further than that. In both its original 1970s incarnation and its early 2000s reboot, Battlestar Galactica filled the gap left in the TV schedules by Star Trek's cancelation. While BSG was airing on ABC in 1978, production was well underway on Star Trek's first cinematic adventure – Star Trek: The Motion Picture. The victim of network cancelation, the original Battlestar Galactica aired its final episode in April 1979, four months before Star Trek: The Motion Picture released in theaters and re-launched Gene Roddenberry's legendary franchise.Fast-forward over twenty years later, and after being canceled by UPN and Paramount, Star Trek: Enterprise's controversial finale aired in May 2005. Four months later, history repeated itself and Battlestar Galactica stepped in to fill the gap until a new Trek movie, following its successful miniseries a year prior. However, this time, under the stewardship of Ronald D. Moore, Battlestar Galactica ran for considerably longer than its predecessor, airing its finale in March 2009, less than two months before J.J. Abrams' Star Trek reboot released in theaters. Although the similarities between the parallel timelines of Star Trek and BSG are mere cosmic coincidences, there are more overt crossovers between the two iconic sci-fi franchises.
12 Ronald D. Moore 
The strongest link between Star Trek and the Battlestar Galactica reboot is the creative mind of BSG's creator and showrunner Ronald D. Moore. After many years on Star Trek: The Next Generation, Moore then moved to Star Trek: Deep Space Nine from season 3, serving as supervising producer as the show moved into its most critically acclaimed period. Along with showrunner Ira Steven Behr and the DS9 writing team, Moore helped to redefine Gene Roddenberry's utopian vision for a decade in which traditional notions of good and evil were becoming harder to define. Moore carried many of these thematic concerns into Battlestar Galactica's story of the war between the Cylons and the Colonists.
11 Kira/Kara Thrace 
The connection between Ronald D. Moore's time on Star Trek: DS9 and Battlestar Galactica went deeper than the shared themes of theology, rebellion, and warfare. Speaking to an audience at the Edinburgh International Television Festival in 2016, Moore revealed that the inspiration for Katee Sackhoff's beloved BSG character Kara "Starbuck" Thrace came from Major Kira Nerys in DS9. Moore believed that both characters shared similar "kick ass" traits, and it's hard to disagree with his assessment.
10 Nana Visitor 
Kira actress Nana Visitor guest starred in the Battlestar Galactica episode "Faith" as Emily Kowalski. As President Laura Roslin (Mary McDonnell) was undergoing treatment for cancer, she bonded with fellow patient Emily, and the two engaged in huge theological discussions about the gods that Roslin and the rest of the Fleet worshiped. Emily was very different to Kira Nerys, as she didn't believe in the faith that bound the whole Fleet. When discussing the prophecy that they would eventually find Earth, Emily scoffed at the notion of religion as metaphor, responding, "I don't need metaphors. I need answers."
9 Michelle Forbes 
Michelle Forbes made a huge impact when she returned as Ro Laren in Star Trek: Picard season 3, and did the same when she debuted as Admiral Helena Cain in Battlestar Galactica. Cain was a brutal pragmatist, who took a darker path than Commander Bill Adama (Edward James Olmos) did. In many ways, Cain was the opposite of Ro, who joined the Maquis to overthrow the brutality of the Cardassian occupation. Ultimately, Cain's cruelty toward her Cylon prisoners in BSG was her undoing, as she was murdered by her Cylon lover Gina (Tricia Helfer).
