Like "Star Wars", "Doctor Who", the "Marvel Cinematic Universe", and pretty much any long-running franchise in pop culture, the modern iteration of "Star Trek" is never afraid to point its tractor beam at nostalgia.
Jean-Luc Picard made it so once again across three seasons of "Star Trek: Picard", while Kathryn Janeway took a bunch of kids on a tour of the final frontier in "Star Trek: Prodigy". But there's been one major absentee from that 24th century era of Starfleet storytelling, as the ultimate fate of long-serving "Deep Space Nine" commanding officer Benjamin Sisko has spent a few decades filed away in a Federation databank marked "unknown".
