A year in space
Discussion
Docu on Netflix about Scott Kelly, NASA astronaut who spent almost a year on the ISS as part of research into a trip to Mars.
Put here rather than in TV section for obvious reasons. I don’t have claustrophobia, but that Soyuz capsule would probably induce it! No thank you.
Have any of the conclusions regarding the human effects of spending that long in space been published?
Put here rather than in TV section for obvious reasons. I don’t have claustrophobia, but that Soyuz capsule would probably induce it! No thank you.
Have any of the conclusions regarding the human effects of spending that long in space been published?
Eric Mc said:
Yes - plenty of papers have been written on the long term effects of Zero G going back to the early 1970s.
No - I meant from that particular experiment. Not sure too many people have spent a year in zero g, even going back to the early 70s. Presumably NASA would not have gone to the expense of putting a man in orbit for a year if they believed that all relevant data was already in published papers.
Edited by Ayahuasca on Wednesday 14th October 17:29
Beati Dogu said:
Scott Kelly's twin brother Mark was also an astronaut, so they were able to do comparative testing on both of them. Dr Mengele styleee (not really).
It's interesting what Scott Kelly said about CO2 levels on the ISS, which are much higher than the 400 ppm trace amount it is on Earth. When a Shuttle crew of 7 rocked up, the CO2 scrubbers couldn't quite cope and he'd get a headache.
Scientist used to think that human tolerance to CO2 was quite high, but it turns out that when it gets above 6600 ppm, it is known to cause symptoms like headaches, mood changes (e.g. short temper, snappiness etc), lethargy, congestion and difficulty concentrating. This is much lower than was previously thought and has led NASA to try to reduce the previous maximum allowable level from 7000 ppm down to 5300 ppm recently.
This doesn't get mentioned much, but keeping CO2 to manageable levels will always be a challenge for deep space / long duration missions.
Interesting. Apparently 5000ppm is the permitted limit in most workplaces. It's interesting what Scott Kelly said about CO2 levels on the ISS, which are much higher than the 400 ppm trace amount it is on Earth. When a Shuttle crew of 7 rocked up, the CO2 scrubbers couldn't quite cope and he'd get a headache.
Scientist used to think that human tolerance to CO2 was quite high, but it turns out that when it gets above 6600 ppm, it is known to cause symptoms like headaches, mood changes (e.g. short temper, snappiness etc), lethargy, congestion and difficulty concentrating. This is much lower than was previously thought and has led NASA to try to reduce the previous maximum allowable level from 7000 ppm down to 5300 ppm recently.
This doesn't get mentioned much, but keeping CO2 to manageable levels will always be a challenge for deep space / long duration missions.
Gassing Station | Science! | Top of Page | What's New | My Stuff