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For real though, I think about this at least once a day
(i.imgur.com)
Star Trek memes and shitposts
Come on'n get your jamaharon on! There are no real rules—just don't break the weather control network.
The Ferengi from "The Price" showed up in VOY, as did the Borg Queen, and Tom Riker was pivotal to an episode of DS9.
It's a huge universe, why would this particular entity have to show up in another episode? It could be off exploring the Gamma quadrant.
Why would Starfleet be so fundamentally uninterested in learning about an enitity literally birthed by one of their Starships?
Because they can't find it? It's tiny, it flew off into the distance...for all we know, there are a dozen science ships looking for it during the entire DS9 run.