S1 E1: Breakaway
On Alpha, the discovery of energy leaks from sites where atomic wastes shuttled from earth are buried triggers a desperate attempt to avert a catastrophic explosion.
50 minutes
- 66% Tomatometer
A moonbase crew fights for survival in the aftermath of a massive explosion that shifts the moon from its orbit into space.
Cast: Martin Landau, Barbara Bain, Nick Tate
Director: Tom Clegg, Charles Crichton, Raymond Austin
S1 E2: Matter of Life and Death
Helena's husband turns up to warn the Alphans away from a planet that is composed of antimatter, as he is.
50 minutes
S1 E3: Black Sun
A phenomenon that devours even light is sucking Alpha toward its center.
50 minutes
S1 E4: Ring Around the Moon
A spaceship locks Alpha into an orbit and proceeds to steal data from its computer banks.
49 minutes
S1 E5: Earthbound
Commissioner Simmonds, who was visiting the moon when it broke away from earth, insists on a chance to go home aboard an earthbound alien spaceship that has crash-landed on Alpha.
50 minutes
S1 E6: Another Time, Another Place
A phenomenon that makes Alpha and everyone on it appear to be duplicated convinces a Main Mission staffer that she is living in her own future.
50 minutes
S1 E7: Missing Link
An anthropologist from the planet Zenno abducts Koenig to become the subject of a study.
50 minutes
S1 E8: Guardian of Piri
A planet where machines do all the work is slated to become the Alphans' new home. But Koenig sees a flaw in the seeming paradise.
50 minutes
S1 E9: Force of Life
Burned-out equipment and frozen corpses lie in the wake of a technician whose body has been invaded by a mysterious force.
50 minutes
S1 E10: Alpha Child
When the first baby born on Alpha suddenly grows to the size of a 5-year-old, Koenig senses a more sinister explanation than outerspace conditions.
50 minutes
S1 E11: The Last Sunset
Paul and Sandra look forward to raising a family as the Alphans prepare for an exodus to the planet Ariel.
50 minutes
S1 E12: Voyager's Return
Alpha encounters a malfunctioning spacecraft that has been spewing lethal particles since its 1985 launch.
50 minutes
S1 E13: Collision Course
The queen of a planet on a collision course with Alpha insists on a seemingly preposterous solution.
50 minutes
S1 E14: Death's Other Dominion
A half-crazed soothsayer warns the Alphans to flee from a planet where the inhabitants are immortal.
50 minutes
S1 E15: The Full Circle
On a strange planet, Sandra is kidnapped by cave men whose chief bears a striking resemblance to Koenig.
50 minutes
S1 E16: End of Eternity
Commander Koenig rescues an immortal alien from eternal imprisonment inside an asteroid. The liberated one repays the kindness by wreaking destruction among the Alphans.
50 minutes
S1 E17: War Games
After an alien attack devastates Alpha, John and Helena go to the hostile planet to plead for mercy on the survivors.
50 minutes
S1 E18: The Last Enemy
Two warring planets, positioned so that they cannot shoot at each other directly, seize Alpha as a gun platform when it wanders into their range.
50 minutes
S1 E19: The Troubled Spirit
A botanist conducting experiments on communication with plants is haunted by a disfigured apparition.
50 minutes
S1 E20: Space Brain
An outburst of hieroglyphics on Alpha's screens portends its encounter with a Space Brain.
50 minutes
S1 E21: The Infernal Machine
An ancient man and the talking machine he serves come to Alpha to request urgently needed supplies.
50 minutes
S1 E22: Mission of the Darians
The Alphans answer an SOS from a crippled spaceship carrying refugees from a dying planet.
50 minutes
S1 E23: Dragon's Domain
Dr. Russell retells the far-fetched explanation offered by the survivor of a 1996 space probe.
50 minutes
S1 E24: The Testament of Arkadia
Alpha's uncontrolled flight comes to a halt and its power plummets when it approaches an unidentified planet.
50 minutes