Imagine a world where the global space race never ended. This thrilling "what if" take on history from Ronald D. Moore (Outlander, Battlestar Galactica) spotlights the high-stakes lives of NASA astronauts and their families.

Season two picks up in 1983, the height of the Cold War, with tensions between the United States and the USSR at their peak. The Department of Defense has moved into Mission Control, and the militarization of NASA becomes central to several characters' stories: some fight it, some use it as an opportunity to advance their own interests, and some find themselves at the height of a conflict that may lead to nuclear war.

The propulsive third season takes viewers to a new decade, moving into the early '90s with a high-octane race to a new planetary frontier: Mars. The Red Planet becomes the new front in the space race not only for the US and the Soviet Union, but also an unexpected new entrant with a lot to prove and even more at stake. Our characters find themselves going head-to-head as their ambitions for Mars come into conflict and their loyalties are tested, creating a pressure cooker that builds to a climactic conclusion.

Rocketing into the new millennium in the eight years since season three, Happy Valley has rapidly expanded its footprint on Mars by turning former foes into partners. Now 2003, the focus of the space program has turned to the capture and mining of extremely valuable, mineral-rich asteroids that could change the future of both Earth and Mars. But simmering tensions between the residents of the now-sprawling international base threaten to undo everything they are working towards.