Space: 1999

S01E01

Breakaway

In September 1999, John Koenig reports to Earth's Space Research Centre at Moonbase Alpha as its new commander. A strange sickness is killing some of the Moonbase Alpha crew. Commander Koenig's investigation reveals that the source lies at Nuclear Waste Disposal Area 1 caused by excessive magnetic energy fields. The continuous build up of energy shortly causes massive explosion clusters that knocks the moon off orbit into deep space.

• Directed by Lee H. Katzin
• Written by George Bellak

S01E10

Black Sun

The travelling Moon drifts within range of a black sun. Pulled toward certain destruction by its inescapable gravitational force, the Alphans employ desperate measures to stay alive. As a lifeboat Eagle carries six persons to safety, the Moon plunges into the black sun, with only an experimental forcefield protecting Alpha.

• Directed by Lee H. Katzin, Charles Crichton
• Written by David Weir

S01E03

Collision Course

The Moon is on a collision course with an enormous planet. On a scouting mission, Koenig encounters Arra, the Queen of Atheria. The aged monarch proclaims the collision is a preordained event and must occur for her people to evolve to a higher plane of existence. Now Koenig must convince his staff to have faith and do nothing in the face of apparent destruction.

• Directed by Ray Austin

S01E02

Force of Life

The body of Anton Zoref is invaded by an unknown life force. The man soon manifests an uncontrollable ability to absorb energy. As the Alphans struggle to understand this mysterious force, Zoref's need becomes insatiable. Driven by instinct, he makes his way to the greatest source of energy on Alpha: the Nuclear Generating Plant.

• Directed by David Tomblin

S01E09

Mission of the Darians

Encountering a derelict spaceship, the Alphans respond to an automated distress signal. On board, they discover what remains of the once-great civilisation of Daria: an elite group which maintains control of the ship and a tribe which has descended into savagery. The Alphans are appalled when they discover what measures the Darians have taken to survive.

• Directed by Ray Austin
• Written by Johnny Byrne

S02E04

One Moment of Humanity

A sinister woman called Zamara materializes on the base, forcing Helena and Tony to accompany her to the planet of Vega, whose natives are anything but friendly. A servant of the Vegans, known only as Number Eight, informs the two Alphans that he and his race are the natural inhabitants of the planet and that Zamara and her race are androids, who, it turns out, want the Alphans to teach them warfare.

• Directed by Charles Crichton

S00E08

Return to Moonbase Alpha

S00E02

The Return of Victor Bergman

S00E01

Message from Moonbase Alpha

• Written by Johnny Byrne

S00E15

AlphaCon

S00E09

Destination Moonbase-Alpha

• Written by Gerry Anderson

S02E24

The Dorcons

• Directed by Tom Clegg
• Written by Johnny Byrne