19

It's not an in-universe answer, but there's some interesting background here. The original pilot did not include Doctor Smith or the Robot. This included the sequences that were later used in early episodes where they took the trip in the chariot to a warmer climate. In order to use that footage, they had to come up with a reason Doctor Smith and the ...


19

They basically had two choices: keep him around, or kill him. (The latter includes abandoning him on some planet.) The ship wasn't big enough to have a brig, and there weren't enough people on board to act as guards. I remember (not very clearly) an early episode in which Dr. Smith was adrift outside the ship in a space suit. They can rescue him, but if ...


19

According to this interview with Jonathan Harris for DVDtalk (audio version here), the decision to award him "Special Guest Star" status had nothing whatsoever to do with any supposed decision to kill of his character and more to do with the fact that he was a last minute addition. I called Allen and said, "I solved your billing problem." "Eh? What?," ...


10

Because the Jupiter's hyperdrive works in leaps From the books we get a little more detail as to how the Jupiter 2's hyperdrive works and it doesn't seem to be the "continuously FTL speed" that we think of when it comes to traveling in hyperspace or Star Trek's warp speed: Page 10 explains that the Jupiter 2's hyperdrive warps space to make its immense ...


9

Per the excellent "Lost in Space" wiki, in episode 3 ("The Kidnapped of Space") it specifically states that Dr. Zachary Smith is a Doctor of Intergalactic Environmental Psychology In the TV show, he also claims to be a medical doctor, a psychologist and a psychiatrist. Whether this is simply bluster or whether these are aspects of his PhD is not made ...


8

His name was "Robot". Just to nitpick, in the second season episode "Ghost Planet" he is referred to as "Robot B-9." In every other episode he is addressed merely as "Robot." In an episode where they travel back in time to just before they launch, there is a crate in Dr. Smith's office. It contains the Robot. On the side there is an acronym, G.U.N.T.H.E.R., ...


8

The robot identified itself as such in episode S02E03 "The Ghost Planet". When asked to identify itself by the Supreme Prototype, the robot responded with his full model and assignment: LEADER: Identify yourself. WILL: I'm Will Robinson. LEADER: Silence! Only the robot. The Earth creature will remain at attention. LEADER: Repeat. ...


8

The Lost in Space Wiki has your answer here: The spacecraft is propelled by atomic propulsion, using the substance deutronium as a power source. It also appeared to have an ion drive, and a magnetic drive. Small rockets came from unknown locations along the rim of the ship. This is also supported on the Wikipedia page Specifically, the previously ...


6

According to the wiki - http://lostinspace.wikia.com/wiki/Jupiter_2_(TV_series) The original Jupiter ship appears in comic books, and was destroyed by the same group who'd enlisted Doc Smith to sabotage the Jupiter II


6

According to dubious IMDB trivia. The Robot was never verbally named on-screen. Irwin Allen reputedly liked Rodney as its moniker, whilst an intriguing hint can be seen in Lost in Space: The Time Merchant (1968), where the Robot's shipping crate is stamped "General Utility Non-Theorizing Environmental ROBOT" (capitals highlighted in red) suggesting that ...


6

Apparently no one here has ever owned a house cat. It pretty much does nothing but ignore what it has been told not to do, eats free meals, constantly takes naps, will maliciously bite and scratch any human in the house for imagined or perceived slights (might kill you on a whim if it could), runs at the slightest hint of danger, demands attention and ...


5

There was one episode where a sentient robot referred to him as B-9. In the script, they often referred to him as 'hero'.


5

I dont believe so, but he did say Less Talk! More Work! ... I have yet to find a clip of him saying this line but this link details all B9 quotes.


5

The upper and lower decks were separate sets. In the original pilot, the ship ("Gemini 12") only had one deck, with no living quarters. When the show went to series, the premise was retooled to add Dr. Smith and the Robot, along with a lower deck. The footage from the pilot was chopped up and integrated with several of the first season episodes, which is why ...


4

He's bright, but a bit too adventurous for his own good. And in practice, despite a few narrow squeaks, he always comes through all right in the end, which probably boosts his self-confidence quite a bit, and inclines him to follow his own instincts rather than listen to advice. Surely not incredible in a twelve-year-old. It is, after all, a "mixed-up" ...


4

All of the answers above are very true: they weren't villains, he was a human, they were kind, he was extremely good at talking he way out of things, etc. However, there is another little thing that might have also factored in-universe. At the beginning of the show, Zachary Smith fills the role of-besides being the actually competent saboteur-of their ...


4

Probably he has a routine that starts self-defense mechanism as a response to insults or threats because they usually comes before physical aggression. So if we are programming a robot that needs some time to activate it's defensive mechanisms it would be a good idea to activate them on first signs of approaching violence. Not because he has to use it ...


3

The below is speculation, but feasible I think Indeed, I had a similar suspicion that as is in @HorusKul's answer. It is well established that there was a lot of international conflict with regards to the Jupiter Launch that a saboteur had been employed for the Jupiter II. Although I lack strong evidence for this, I have another theory. I have come ...


3

Back when the myth around Midas was made, people didn't have an understanding of atoms yet. As far as the myth is concerned, everything he touches is turned into gold, but "air" is not something you can touch as far as ancient greeks are concerned. The fact that he might be touching gas, atoms or something else you can't see while waving his hand around is ...


3

There was an episode where the Jupiter Two crossed the galaxy in a day, I don't remember if it did this under its own power, or from an outside source. I believe it made Hyper Jumps much like the Battlestar Galactica ships in the 2004 version. However its normal flight time to Alpha Centauri was said to be 5.5 years. So its capabilities contradicted ...


2

The plot required him to be unable to contact Alpha Control, and this was more explicable if he was transported to a backward "hick" town out in the middle of nowhere. Clearly the scriptwriters wanted Will to return to small-town America rather than the Big City, and perhaps laid on the quaintness a bit thicker than they really needed to


2

I believe they blasted off from Priplanus in the Season 2 opener. Though there is no dialogue to support that, the rock formations around the Jupiter 2 are the same as the rock formations around it all through Season 1. The Robinsons visited 2 planets in Season 2, the first being "The Ghost Planet" in episode 3 of Season 2 and then crash landing on "...


1

How about a 21-minute documentary about a project to restore the original model (published in June 2016)? When Lost in Space was picked up for the fall of 1965, series art director Bob Kinoshita was tasked with turning the single-story Gemini 12 into the two-story Jupiter II. Retaining the design of the upper hull, ...


1

My theory, based on how NASA (AKA "Alpha Control") does things is that the Jupiter-1 would have been an unmanned vessel, except for, perhaps, its own robot that would be there to provide in-flight maintenance of the ship's engines/sensors, etc. Ideally, this would be launched almost a year (give or take) before the Jupiter-2 and would provide telemetry to ...


1

Robby the Robot was actually a Robot on the film, "The Lost Planet". That same Robot featured in season 1 episode 20, where the Robinson's Robot got very jealous of a Robot they found, which happened to be the same Robot used as Robby the Robot in The Lost Planet. Video of the scene (youtube)


Only top voted, non community-wiki answers of a minimum length are eligible