How Many Episodes Of "Space: 1999" Have You Seen?

Commander John Koenig, the new commander of Moonbase Alpha, leads the investigation of a mysterious disease at the station and uncovers evidence of a far greater looming disaster.

After destroying an asteroid on a collision course with the moon, an even larger obstacle appears - an entire planet! On a recon mission, John Koenig encounters an inhabitant who convinces him- on the basis of faith- that the moon and the planet must collide. But no one else supports Koenig's stand.

On the ice world of Ultima Thule the Alphans encounter members of lost earth expedition who have achieved immortality- but at a price!

The Alphans' joy turns to horror when the first child born on the Alpha matures into a five year old in a matter of hours. This is only a prelude to the arrival of formless alien fugitives- who plan to inhabit Alpha's population.

The Alphans encounter a miles-long ark from the planet Daria, where the inhabitants have a very distinctive class separation.

Contact is made with the planet Piri, where the main computer created an idyllic life that led to extinction of its population through apathy. Now John Koenig must fight to save Alpha as his people fall under the same fate.

Dr. Russell's presumed-dead husband mysteriously reappears on a reconnaissance mission to a nearby planet.

While exploring an Earth-type world several Alphans, including Commander Koenig and Dr. Russel, disappear after sighting a strange fog. Shortly afterwards a race of primitive humans are encountered.

As the Alphans are planning to explore the planet Ariel, a 'missile' attaches itself to the en route Eagle. Upon returning to Alpha, the 'missile' gives the Alphans a lunar atmosphere. But the joy at the possibility of making a new world out of the Moon is short lived, as the moon does not enter orbit around the planet or its sun, and Alpha faces destruction from the newly acquired lunar air.

Maintenance technician Ted Clifford is possessed by an eerie yellow glow, which ultimately kills him. It transpires that it is coming from a planet called Triton, which captures the Alphans and insists that Helena should become the Eyes of Triton. Before long she is acting just as Ted Clifford did before his death.

Alien glyphs appear on all of Alpha's screens. Koenig sends an Eagle to investigate. The Eagle is lost and the pilot is taken over by a huge, alien 'Space Brain', using him as a channel to make the Alphans do its bidding. Koenig has to destroy it.

The Alphans land on the planet Arkadia, where glyphs suggest it is the cradle of civilisation from which life on Earth began. Now it is desolate and Koenig feels it is unsuitable for colonisation. Two renegade crew members have other ideas, however, and take Helena hostage in their demands to settle on Arkadia.

An Eagle is sent onto the surface of the planet Psychon, which has titanium needed for repairs to the Alpha Base. It fails to return and is used by Psychon scientist Mentor as bait with which to entice other members of the Alphan crew onto the planet. Mentor is building a biological computer that will hopefully transform his deteriorating planet back into the Eden it once was. However, the machine can only be fueled by the living brains of humans, and Mentor has his eye on those of the Alphan crew. Fortunately, Mentor is not alone on the planet; his innocent daughter, the shape-shifting Maya, is unaware of her father's plans, so Koenig tries to convince her to side with the Alphans.

A transmission from Dr. Logan in Texas City leads the Alphans to believe that they can finally land back on Earth through a revolutionary teleportation process. The downside is that it is now 2120 on Earth and the surface has become an unbreathable wasteland through centuries of pollution. The Alphans, though, are intent on abandoning the wandering moon. However, due to a hitch, the Alphan test subjects find themselves in a primitive and hostile environment. It is Scotland in the fourteenth century where the Scots are at war with the English invaders, who kidnap the Alphan trio.

The Alphans encounter an eccentric and intelligent robot who is known as Brian the Brain. Brian's creator Captain Michael and his crew have all died in mysterious circumstances and Brian asks for the help of Koenig and his crew. However, it soon becomes very apparent that Brian is anything but harmless and was in fact responsible for the deaths of Captain Michael and his colleagues. And he is ready to do the same to the Alphans unless they supply him with enough nuclear fuel to sustain him "forever".

The latest extra-terrestials to be rescued by the Moon Alpha Base crew are Pasc and his young son Etrec. They are from the usually peaceful planet of Archaron and they claim that they are victims of a rebellion, engineered by Pasc's wife Lyra. However, Helena discovers that they have both been infected with a virus which makes them considerably less friendly and more deadly than their initial claim.

The Alpha Moonbase needs a rare ore known as Milgonite, which is detected on an extremely dry planet. Koenig leads a small landing force and discovers a glowing rock formation which comes alive and cuts off the party's links with the base. It is a trap - the planet needs water to survive and has lured the travellers there for the water in their bodies.

Whilst he is exploring an asteroid Koenig is taken over by an alien race known as the Kalthon, who replace him with an exact double. In consequence every action ordered by the fake Koenig is solely for the benefit of the Kalthon and to the detriment of the welfare of the Alphans. Helena realizes that something is wrong when 'Koenig' is cold to the touch and needs to convince the other crew members.

Ship's engineer Patrick Osgood believes he can obtain tiranuim to make a new heart for his sick wife Michelle, from the catacombs of the moon, using explosives. The explosion which follows gives him a vision of the future in which the moon is destroyed by a fireball and a sudden heat storm strikes. Though Helena is making a new heart for Michelle, its repeated failures cause Osgood to become impatient. Convinced he is his wife's only salvation, he drags Michelle down into the catacombs, giving Koenig a double task - to avoid the fireball and save the Osgoods.

Several crew members explore the planet Sunin, including botanist Shermeen Williams, who appears to have visionary gifts. She links up with an alien, called Vindrus, who wants her help in transferring his body and that of his race into solid matter, giving them proper human form so that they can join the universe as real matter. However, for every one of his race made flesh, an Alphan must lose their matter.

Lambda waves permeate Moonbase Alpha, causing instruments to malfunction and people to behave out of character. Crew member Sally dies in mysterious circumstances. Koenig is assailed by guilt-driven visions from his own past. It eventually becomes clear that the Lambda Variant has amplified psychic abilities on the base, in particular for Carolyn Powell, whose lover was previously Sally's boyfriend, and who is beset by jealous rage. Dr. Russell aids Koenig to overcome his own "ghosts", and prevent Carolyn from taking over the Moonbase.

Koenig convinces Helena and Maya that their supposed rescuers from earth are really hostile aliens who want a nuclear explosion on Moonbase Alpha.

When a ship carrying a prisoner lands at Moonbase Alpha after asking for assistance, Maya insists that the prisoner is a poet and not a murderer and releases him.

The arrival of the Alphans on another planet seems to cause a change in its atmosphere, setting off pollution and poisoning of the water. They meet Zoran, the sole survivor of the last exploratory force, who tells them that the planet is controlled by an immortal being - with whom Koenig must parley if he and his crew are to leave the planet alive.