TMDb/For All Mankind TV The Expanse ended too soon. Fans still hope for its return. Discover why this acclaimed sci-fi series, with its 95% Rotten Tomatoes score, left us wanting more. March 19, 2026 AceShowbiz - The sudden conclusion of The Expanse left sci-fi enthusiasts yearning for more, with a significant portion of the original book series still unadapted. Four years since its finale, fans continue to call for its revival, though no official continuation has been announced.