The pilot movie 'Babylon 5: The Gathering' airs, introducing the universe and key characters.
The first episode of the Babylon 5 television series airs, officially launching the show.
The second season of Babylon 5 premieres, expanding the story and character development.
The third season begins, continuing the complex narrative and political intrigue.
Season 4 debuts with ongoing storylines and significant character arcs.
The final episode of Babylon 5 airs, concluding the story after five seasons.