Episode 1
Polaris
Nearly 10 years have passed. Danielle and Ed attend a celebration, where things take a terrifying turn.

The propulsive third season takes viewers to a new decade, moving into the early β90s 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.
Episode 1
Nearly 10 years have passed. Danielle and Ed attend a celebration, where things take a terrifying turn.
Episode 2
A commercial spaceflight company makes an announcement. The choice over who'll command the Mars mission leads to a shift in personnel.
Episode 3
As NASA scrambles to prepare for the launch to Mars, Margo is confronted with a harsh personal reality.
Episode 4
A surprise maneuver during the journey to Mars provokes desperate measures.
Episode 5
The race to land first on Mars brings together unexpected allies.
Episode 6
The astronauts move quickly to build Martian bases.
Episode 7
A joint mission brings about conflict between crew members.
Episode 8
After a sudden crisis, the Martian crews pull together.
Episode 9
Plans to leave Mars are complicated by an unforeseen issue.
Episode 10
The Martian crew debates how to save the life of one of their own.