The first book in The Expanse series, 'Leviathan Wakes', by James S. A. Corey is published, marking the beginning of the franchise.
The second novel in The Expanse series, continuing the expansive space opera saga, is published.
The SyFy channel picks up the TV adaptation of The Expanse series, bringing the story to television audiences.
The Expanse television series premieres on SyFy, introducing the story visually to viewers.
The third novel in The Expanse series is published, continuing the storyline.
Amazon picks up The Expanse series after SyFy cancelled it, continuing the show's production and distribution.
The Expanse resumes airing new episodes on Amazon Prime Video, gaining a broader international audience.
It is announced that the upcoming season will be the final season of The Expanse TV series.
The final season of The Expanse TV series premieres on Amazon Prime Video, concluding the story arc.
The protomolecule, an alien biological agent, is discovered on Phoebe, one of Saturn's moons, triggering a new era of interstellar potential and conflict.
The OPA, a political and military organization representing the Belters, is formed to protect the rights and interests of those living in the asteroid belt and outer planets.
The ice hauler Canterbury is destroyed under mysterious circumstances, which escalates tensions between Earth, Mars, and the Belt.
The construction and activation of the Ring Gate allows access to new star systems beyond the Solar System.
A major battle occurs at the newly discovered planet Ilus (New Terra), involving Earth, Mars, and Belters over mining rights and territorial claims.
A radical faction of the Outer Planets Alliance launches a rebellion against the inner planets, seeking independence through violent means.
Humanity uncovers technology left behind by the mysterious Ring Builders, vastly changing our understanding of the protomolecule and interstellar travel.
Fighting breaks out on Station One among rival political factions for control over the newly accessible space beyond the Ring.
