Season:
1
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2
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3
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Year:
1965
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1966
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1967
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1968
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15 September 1965Date: October 16, 1997 The Jupiter 2 is to launch, but a saboteur wants to destroy it. Unfortunatly he is part of the Jupiter 2 Crew now Lost In Space!
22 September 1965The Jupiter 2 is pulled into a giant ship occupied by bubble like creatures.
29 September 1965While spacewalking Doctor Robinson is pulled down onto a planet. Major West lands the ship to search for him.
6 October 1965Due to the planet's orbit, the Robinsons are going to freeze to death unless they head south.
13 October 1965After experiencing the extreme cold, the planet gets closer to the sun roasting it. Smith sends the robot to warn them.
20 October 1965The Robinsons meet a fellow earth explorer who is also lost in space. They help him repair his ship and ask him to take Will and Penny home.
27 October 1965Feeling lonely and alienated from her family, Penny finds solace in her friendship with Mr. Nobody, a voice that lives in a cave near a spring. Mr. Nobody is in fact a bodiless life force who becomes fiercely protective of his human friend. Trouble arises when Smith discovers that the jacks that Mr. Nobody gave to Penny as playthings are diamonds.
3 November 1965Macabre aliens -- quite literally talking heads -- need a humanoid brain to replace a worn out computer in their spaceship. They capture Smith, but quickly realize that his brain is unsatisfactory. The aliens release Smith so that he can bring them somebody more suitable: "a small Robinson."
Season 1, Episode 9: The Oasis
10 November 1965Smith eats some fruit that turns him into a paranoid giant.
17 November 1965A small, crab-like robot heralds the arrival of a family of colonists from an alien race called the Taurons. John believes that they are peaceful settlers, but Smith insists that they are the vanguard of an invading army.
24 November 1965Dr. Smith goes into voluntary exile after John confronts him when his laziness and carelessness threaten the group's survival. With Will's assistance, Smith makes a home in the wreck of an alien spaceship. In it, they find a small alien machine that materializes the operator's wishes.
Season 1, Episode 12: The Raft
1 December 1965Will's "message in a bottle" experiments deplete the supply of fuel for the Jupiter 2. John and Don work on an alternate fuel source, but they cannot stabilize the output. Deciding to build a smaller, 2-man craft, they pull the reactor chamber out and use Will's experiments to construct a "space raft".
8 December 1965With the men off on a mission, the Robinson women must deal with an alien intruder.
15 December 1965As the Robinsons accumulate the last amounts of fuel needed for lift off, Smith is expelled from the camp when his cowardice and sloth nearly costs the men's lives. John is undecided about taking Smith when they leave, but the doctor discovers that the peculiar reproductive habits of alien cyclamen plants might give him the upper hand.
29 December 1965Using a matter transfer device left behind by the Taurons, Will beams himself back to Earth. He arrives safely in the small town of Hatfield Four Corners, Vermont, but his pleas for help are considered the fantasies of a runaway boy.
12 January 1966The Keeper is an alien who travels the galaxy collecting living pairs of interesting or rare animals. His courtly overtures towards the Robinsons belie his true intention -- to add a pair of humans to his incredible menagerie.
19 January 1966Dr. Smith tries to steal the Keeper's spaceship, but succeeds only in releasing his collection of animals, many of them dangerous. Although The Keeper can easily recall his creatures, he refuses to do so unless the Robinsons give him Penny and Will.
26 January 1966Will becomes fast friends with Captain Alonzo P. Tucker, an Earthling who escaped his alien captors to become a wandering space buccaneer. But Tucker's roguish charm hides a secret that could destroy them all.
2 February 1966Trying to contact his Uncle Taddeus during a séance Doctor Smith summons a ghostly monster native to the planet.
9 February 1966After repairing a damaged robot, it first helps the Robinsons and then plots to capture them.
16 February 1966Judy and Penny stumble into an alien mirror and find a universe occupied by one very lonely boy.
2 March 1966John and Will fight a battle with an alien father and son that is to the death.
9 March 1966After ruining the Robinson's food supply, Doctor Smith makes a deal with the space trader and gives his body for food provided he collects it in 200 years. The space trader comes to collect immediately.
16 March 1966Doctor Smith delights that he is made ruler of an alien species until he learns that he is also their sacrifice.
30 March 1966The Robinsons run into a group of space hillbillies who might help get them home.
6 April 1966Dr. Smith and Penny obtain a ring that will turn anything to platinum including Penny.
13 April 1966Will awakes a sleeping princess whom he now must marry. Her race has been awakened and now plans to conquer the universe starting with earth.
20 April 1966A strange interdimsensional ship turns Will into a genius and Doctor Smith into an old man.
27 April 1966An evil spirit possesses John Robinson who plans to fly the Jupiter 2 back to his home world even at the expense of Will's life.
14 September 1966A space miner is blasting the planet apart and the Robinsons have to leave even though Smith wants to stay and become rich.
21 September 1966Smith finds the course back to earth, but a space female lures Smith out of the ship and saving him again leaves the crew of the Jupiter 2 lost in space.
28 September 1966Smith makes the Jupiter 2 land on a planet occupied by cyborgs.
5 October 1966On their next planetary stop the Robinsons encounter a hermit that plans to attack the Jupiter 2 with his army.
12 October 1966A space circus comes to town and the owner wants Will to runaway with it.
19 October 1966The Robinsons are tried for space crimes and the evidence shows that Smith is really responsible for the mishaps.
26 October 1966Doctor Smith creates an android that they teach to be more human. A humanoid shows up looking for payment for the android.
2 November 1966Dr. Smith ends up in a boxing match with some space gladiators. If he wins he will return to earth and if he loses it won't matter because earth won't be there.
9 November 1966Will, Penny and Dr. Smith get involved with a thief that is searching for a princess.
16 November 1966Jeremiah Smith shows up to kill Doctor Smith for his inheritance.
30 November 1966Zeno an intergalactic gun fighter is Doctor Smith's double ganger and he switches places with Smith. Smith confesses to Zeno's crimes out of fear.
7 December 1966An alien harp is found that is a gateway to planet than resembles hell.
14 December 1966The robot is stolen to create more robots so they can conquer the earth.
21 December 1966Doctor Smith agrees to give away the emotions of the Robinsons to an alien looking for some in exchange for a trip home.
28 December 1966The Robinsons come between a race of gold men and a race of green men who are at war. Penny meets the green alien and befriends him.
4 January 1967The same woman who lured Smith into space returns still in love with Smith. He agrees to return to her dimension and Will gets turned green.
11 January 1967A space knight is following the questing beast who Penny becomes friends with.
25 January 1967Smith and Will find a toymaker's world inside an alien merchandise ordering machine.
1 February 1967A space pirate looking for his crew that mutinied find Will and Dr. Smith trying to repair his empty ship.
8 February 1967Through some harmless playacting, Dr. Smith unintentionally conjures up the magical gauntlets and war hammer of the Norse god Thor. Taking him for a mighty warrior, Brynhilda spirits Smith off to Asgard for a showdown with Thor.
15 February 1967A space wizard conjures up a spaceship so that Doctor Smith can return to earth.
22 February 1967Just hours before the Jupiter 2 is to lift off to take advantage of a rare launch window, Dr. Smith discovers a cave inhabited by three devices -- part beings, part machines -- that are the last living remnants of the once mighty civilization of Draconis. As T minus zero draws near, Dr. Smith increasingly falls under the influence of the Draconians.
1 March 1967Will is reunited with his friend Captain Tucker in this sequel to "The Sky Pirate." Tucker and his very motley crew -- lizardman Deek, hairy humanoid Smeek, and bipedal bison Izralim -- are searcing for a legendary lost treasure. The key to finding the booty might be a disembodied talking head in a box that is harrying Dr. Smith.
8 March 1967In the second of two sequels to "The Android Machine," Verda is sheltered by the Robinsons after she is marked for destruction by the Celestrial Department Store. To that end, the store has dispatched a killer android named IDAK (Instant Destroyer And Killer) Alpha 12.
15 March 1967A female alien meets the Robinsons and use them to help erect an arch to bring her people to colonized their planet.
22 March 1967The robot is running out of power and goes to a strange valley to die and then grows to the size of a city block. Will enters the robot to help him.
29 March 1967While John and Maureen are away observing volcanic activity, the alien scientist Lemnoc captures Don, Judy, Penny, and Dr. Smith and replaces them with android duplicates. Lemnoc then forces Will and the Robot to train the duplicates in survival skills, hoping that they will be an inspiration to his own people, who are losing the will to live.
5 April 1967The planet is invaded by an army of tiny robots who closely resemble the Robinson's robot and acclaim him as their long predicted king. The Robot agrees to become their king, but when he is not the ruthless ruler they expected, they decide that he needs some Dr. Smith in him.
12 April 1967Will and Dr. Smith find a cave that transports them to earth, 19th century Scotland.
26 April 1967Penny will not give up the belt entrusted to her by an alien even if it means their deaths.
6 September 1967The Robinsons leave their planet to escape a collision with a comet and find a ship full of frozen convicts.
13 September 1967Passing through a time warp, the Robinsons do return to Earth in the year 1947. They are mistaken as invaders and start the UFO scare of the 1940's.
20 September 1967A spaceship requests medical help for their computer and Dr. Smith has to perform brain surgery on it.
27 September 1967After killing a hostile alien, Professor Robinson comes across a "hunter" and he must replace his dead prey.
4 October 1967On a planet where a primitive people are ruled by a computer, Doctor Smith goes against character and saves Major West's life.
11 October 1967Using an alien machine Doctor Smith creates an army of cyborgs to conquer the universe.
18 October 1967The Robinsons take a boy home to his planet and come across a spaceship that is a space lighthouse. The boy gets angry when they tell him they don't have enough fuel to get him home.
25 October 1967Accidently landing on a planet, Will, Doctor Smith and the robot find the Jupiter 2 is now an archaeological site and that they are in the future.
8 November 1967A group of space hippies are going to destroy the planet the Robinsons are on.
15 November 1967When a gaseous creature engulfs the Jupiter 2, the other crew members disappear leaving Will and Doctor Smith alone.
22 November 1967The robot falls in 'love' with an evil female robot sought by two aliens.
29 November 1967Galaxic showman Farnum B. wants to exhibit the Robinsons in his zoo.
13 December 1967Two escaped thieves transform themselves into humans and pretend to be tourists as Smith turns the Jupiter 2 into a hotel.
20 December 1967Will meets a princess who is escaping two bounty hunters and Will gets kidnapped instead.
27 December 1967John Robinson and Don West are transported onto a strange new world where their evil opposites exist and plan to change places with them. Will, The Robot and a reluctant Dr. Smith set out to find and help the real Don and John only to be pursued by a evil John Robinson.
3 January 1968Landing on a planet some shapeless beings duplicate the Robinsons and take the Jupiter 2 with the intent of conquering Earth. Will gets aboard to stop them.
10 January 1968Penny is kidnapped by aliens who think that she is the missing Princess Alpha.
17 January 1968After making a deal with the Time Merchant, Dr. Smith returns to earth just before the launch of the Jupiter II. If he doesn't get on it the Jupiter II will crash into an asteroid.
24 January 1968When the Robinsons nearly reach Alpha Centauri, they find a human base run by young people. They convince the adults that Penny and Will aren't their children and they leave in the Jupiter 2.
31 January 1968Don and Doctor Smith are sent to an intergalactic prison after coming across an escapee.
14 February 1968Farnum B the intergalactic showman again encounters the Robinsons as he presents the Galaxy Beauty Pageant that Judy enters.
21 February 1968Doctor Smith disposes of a plant that grows to a gargantuan size and becomes attached to the Jupiter 2.
28 February 1968Smith lands the pod on a planet where plants are the highest form of intelligence next to the writer of this episode. The Robinsons lands only to be captured by Tybo a giant carrot. He plans to turn them into trees while Dr. Smith becomes a stalk of celery.
6 March 1968With the Robinsons running out of food, Dr. Smith trades the ship and the robot to a junk man for food.
????The original pilot episode, which never aired, did not feature either the robot or Dr. Smith (who was added later by 20th Century Fox as an antagonist). Much of the original footage was re-used in the first four televised episodes.
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