B5 along with DS9 and Farscape are my top SF TV series.
Find some way right now to watch SYFY's "The Expanse!" The first season is on Amazon now, and the second season should hit Amazon soon.
Watch it! It's a hard SF, and not the same flavor as those others, but certainly at least as good in story--but scientifically
hard. You might think of it as B5 with harder science.
For instance, there is no FTL, just really good reaction drive. There are no lasers or phasers or blasters, just nukes and rail guns and bullets. There is gravity in a space ship only when they're spinning or under thrust--otherwise they're weightless.
There are three political factions: The Earthers, the Martians, and the Belters. Old, decaying, Machiavellian Earth and young, militaristic, rebellious Mars are locked in a Cold War on the verge of turning hot. They both oppress the Belter mining colonies, and the Belters have no use for either of the "Inners." All of them are seeking the weapons potential of the discovery of a strange alien form of microbial life.
The worlds are fully developed, especially the asteroid worlds and society of the Belters. Love their South African-ish accent and patois.
It's got some outstanding acting and terrific space battles. Every character is layered, and a character you might have though early on was shallow turns out to have depth that you see later, and then look back to realize it was always there. The character with the most interesting backstory is Amos, who is first presented as dumb muscle...but watch him carefully, especially his eyes and let his backstory unfold.
And the Mormons are building a generation ship to take them to another star...which is no surprise at all.
This is the kind of stuff the old-school writers like Asimov, Heinlein, Niven, or Pournelle would pen.
Here are some clips on YouTube (there is profanity, so I won't link them directly here).
World's best space battle: "The Expanse Scene - Best Space battle I ever seen"
Soliloquy of a Belter terrorist: "THE EXPANSE | That Makes Me a Monster | SYFY"
Amos' view of life: "The Expanse - The Churn"
A public servant not to be crossed (1): "THE EXPANSE | Season 2, Episode 9: 'Q&A' | SYFY"
A public servant not to be crossed (2): "The Expanse - I will rain hellfire down on them all"