Season five starts next month and it’s already renewed for a final sixth season. I usually preface my opinions with “favorite” instead of “best” but I’m going to come out and say The Expanse is objectively one of the best sci-fi series of all time. Complex characters, compelling plots, gorgeous cinematography, and arguably the most scientifically accurate.
The first half of the first season can be a little hard to follow for some, but it picks up after that and really takes off. There are just so many factions and different motivations throughout the series. I pick up something new every time I rewatch it. I highly recommend.