It’s an anime about a crew of intergalactic heroes fighting an evil empire.
It’s an Emmy-winning HBO sci-fi Western at least 10 seasons long.
It’s the most important sci-fi fantasy show ever made.
Or, maybe, it’s just another Easter egg.
If you’re a fan of the British anthology series Black Mirror, chances are you’re well-acquainted with a little television show named Sea of Tranquility.
The title has been brought up many times in various episodes of the series, from Season 1 all the way to Season 6.
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