Ed handles a trespasser. Ellen and Deke chart a new course without Mission Control. Season finale.

Tensions on Earth and Mars come to a head.

A crisis in space puts the Apollo 24 and 25 crews in peril.

The Martian crew debates how to save the life of one of their own.

A surprise maneuver during the journey to Mars provokes desperate measures.

Ed and the crew change Apollo 15’s landing site after lunar ice is detected.

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

NASA preps a Jamestown relief mission, while Karen waits for news at the hospital.

A commercial spaceflight company makes an announcement. The choice over who’ll command the Mars mission leads to a shift in personnel.

Ed, Gordo, and Danielle struggle with an extended Jamestown mission.

Tensions between the U.S. and the Soviet Union reach an all-time high on the moon, throwing multiple missions into jeopardy. Season finale.

The race to land first on Mars brings together unexpected allies.

Things start to go awry just as an important mission approaches a critical juncture.

Deke must recruit female astronauts after Russia lands a woman on the moon.

Plans to leave Mars are complicated by an unforeseen issue.

As NASA scrambles to prepare for the launch to Mars, Margo is confronted with a harsh personal reality.

Unlikely partnerships are formed at a high-stakes international conference.

A group on Mars takes drastic measures. Margo grapples with a new assignment.

A training accident spurs a national debate about women astronauts.

After a sudden crisis, the Martian crews pull together.

A launchpad accident leads to delayed missions and FBI background checks.

Eight years later, a new mission begins: Capture an asteroid. Aleida and Danielle are still haunted by events from the past.

Plans are made with interplanetary ramifications. Ed begins working with an unexpected partner.

NASA is in crisis as the Soviets land the first man on the moon in 1969, the beginning of an alternate history.

Director von Braun opposes President Nixon’s directive, with dire consequences.