There is no sickness like pandorum and just being in deep space seems highly unlikely explanation for an otherwise completely unknown mental illness with nose bleeding and paranoia. Cosmic rays cause cancer, not mental illness. If it's schizophrenia then that could have been portrayed as schizophrenia and not some *beep* name. Paranoid Personality Disorder comes about over years of development and just doesn't appear in few hours or days.
Even if it exists, scientists on Earth knew about it from the Eden mission and would have set up counter measures against it in the Tanis mission. They would have used 200 years more advanced psych testing on choosing the crew, there could have been anti-psychosis drugs in the daily regime and hibernation fluids and a flight crew member that was a psychiatrist.
The movie was originally about the ship Pandorum that was transporting the most violent prisoners to a prison planet so this changing it into a fake mental illness so the film could get made, weakens the movie.
They didn't need to invent a new mental illness to have Gallo play god with the crew. Narcissistic Personality Disorder already exists as do psychopaths and both have 1 to 3% foothold in the population.
"Space madness" is such an old name for the fear of potential mental health issues in astronauts, that it's not used any more. Many of the people who want to go into space are already at high risk of certain mental illnesses. So, just like what the crew on the Tanis mission, they pre-screen for mental illnesses. The most common afflictions are asthenization (is a condition experienced by astronauts following long-term space flight, in which following return to Earth the astronaut experiences symptoms such as fatigue, irritability, lack of appetite, and sleep disorders), depression, anxiety and increased tribalism (psychological closing). No psychosis or extreme paranoia is seen and the hallucinations are likely from cosmic rays passing through the cortical nerves and areas of the brain that control sensations. The major worry from radiation of cosmic rays on the brain, wouldn't be an issue for people sitting on Tanis' surface or flying in their ship as their radioactive shielding would be 200 years ahead of our current technology.
The most important point here, which I'm ashamed to have missed initially, is they had been on Tanis surface for 900 years and no longer in space, so Pandorum as a space caused mental illness, was already impossible to develop except for the first patient that showed symptoms in space, Gallo, and if the hibernation pods can keep humans alive and regenerated for 1000 years (Bowers still looked 30), why wouldn't Gallo's brain heal? He just seemed to behave like any other NPD and/or sociopath who should have been screened out pre-flight.
To explain the disease the writers would have had to use a cause from hibernation fluids/process or virus/bacterial infection. The symptoms fit nothing that our astronauts have.
Really, the better explanation would have been a disease caused by extended hibernation or a virus or, even better for a sci-fi movie, a micro alien life form or human developed nano-tech cybernetic implant that went rogue.
It was already explained in the movie as a result of the "hyper sleep" which is based on a technology which doesn't exist so all your conjecture on what astronauts actually experience is pointless.
Agreed. Just got done watching it my first time here and it stood out even in the first time viewing. A recent article I read pointed out that the "weirdness" you get in space has been overstated anyway...stating that while you may have to brush up on your social skills, being in space doesn't fundamentally change a person's psyche.
I certainly couldn't see it changing enough to cause the kind of insanity depicted here...this was nuts lol