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We Don’t Know Why Astronauts Get Motion Sick

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A majority of modern astronauts experience any one of a suite of symptoms scientists collectively call Space Motion Sickness, or SMS. But despite knowing about it for nearly as long as humans have gone into space, we still don't know exactly what causes it, or how to predict which astronauts might lose their lunch.
Hosted by: Hank Green (he/him)
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Sources:
pubmed.ncbi.nlm.nih.gov/16935...
science.nasa.gov/science-news...
www.sciencedaily.com/releases...
www.smithsonianmag.com/air-sp...
www.frontiersin.org/articles/...
www.ncbi.nlm.nih.gov/pmc/arti...
www.ncbi.nlm.nih.gov/books/NB...
polarisprogram.com/science-re...
Image Sources:
www.jfklibrary.org/asset-view...
www.nasa.gov/image-feature/ha...
• Spacewalk at the Inter...
images.nasa.gov/details-iss06...
www.nasa.gov/feature/50-years...
commons.wikimedia.org/wiki/Fi...
commons.wikimedia.org/wiki/Fi...
www.gettyimages.com/detail/il...
commons.wikimedia.org/wiki/Fi...
www.gettyimages.com/detail/il...
• Friendship 7
images.nasa.gov/details-s66-4...
commons.wikimedia.org/wiki/Fi...
www.gettyimages.com/detail/il...
commons.wikimedia.org/wiki/Fi...
commons.wikimedia.org/wiki/Fi...
www.gettyimages.com/detail/ph...
images.nasa.gov/details-51b-1...

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31 июл 2024

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Комментарии : 231

@erzathorsteen830 Год назад

But this channel is my favourite of sci shows 😭

@michaelmayhem350 Год назад

Hanks gotta buy another yacht. Cutting expenses, first Sci show psych & now Sci show space. By putting everything in one channel each topic can publish less often while still appearing as an active channel that regularly puts out content.

@Izandaia Год назад

@@michaelmayhem350 You don't know anything.

@calvinkatt662 Год назад

@@michaelmayhem350 Yeah, they are probably going to go from two space videos per week to 2 to 4 per month.

@BackYardScience2000 Год назад

@@Izandaia denial?

@michaelmayhem350 Год назад

@@Izandaia hank doesn't have a yacht let alone "another yacht". Must be your first day on the internet. Which makes it ironic that you say I don't know anything. At least I know what sarcasm is...

@waylontmccann Год назад

I remember when the Sci show first branched off into its various flavors. Has it been so long? Well, as long as we still get to see our favorite faces and get regular space news and information, I'll always be satisfied. Thanks for all of the hard work!

@ImmortalAbsol Год назад

Me too bye Psych, bye Space 😢

@veggiet2009 Год назад

😢 😭

@DoctorX17 Год назад

Seems like it was only a little while ago that they split... can't believe it was nearly a decade

@joshsickles1163 Год назад

I know it doesn't change the amount of content for Sci show space(I hope), but I am still sad to see it go. Sci show space was my favorite from the team.

@davetoms1 Год назад

This is the last SciShow Space video on this channel?? I'm glad to have here to witness it so soon after it was uploaded. Looking forward to seeing the hosts on the main SciShow channel continuing their journey to teach us wonderful space facts and share fascinating space news 🖖

@sizanogreen9900 Год назад

literally been subscribed to this channel as long as I can remember being on youtube and while I consider myself young not everyone would agree... The point being I am rather sad to see this channel close down. Even if it is essentially just integrating with another channel I have been subscribed to for just as long... :/

@Marin3r101 Год назад

@Patrick Hudson likely. He has stupid rants on his personal channels all mostly political in nature. Why I avoid watching the main channel. Get enough woke crap everyday. Science is truth and alot of what he states as factual, is indeed conjecture.

@Patamole Год назад

@@Marin3r101 anything specific or is that just how you feel?

@tylociraptor8131 Год назад

@@Marin3r101 "woke crap" we get it, you're racist. You're not welcome here.

@ArawnOfAnnwn Год назад

@Patrick Hudson Scishow Space has its own dedicated presenters, with Hank only showing up from time to time. No, there's actually been a bunch of YT channels consolidating recently (another one this week was TLDR) so this is likely a YT-wide thing

@jscotthatcher380 Год назад

awww. well i hope the amount of the space videos doesn't slow down much. and hopefully this will help boost the viewership/reach of the main channel.

@alien9279 Год назад

Aw man your getting rid of scishow space too:( and so soon after scishow psychology. Sad times but glad it's continuing on the main channel

@calvinkatt662 Год назад

This channel has 1.44 million subscribers and they are just going to stop using it? Wow

@alien9279 Год назад

@@calvinkatt662 the main channel has 7.3m, so it kinda makes sense to put it somewhere it'll get the most attention

@Marin3r101 Год назад

Sci show psychology is a joke....most of the topics seem to be pseudo sciences.

@ArchAnjell Год назад

What I liked about Sci Show Space was that it collected the space stuff in one spot. I could subscribe and not have clutter of other science stuff I wasn't interested in my feed. And now it's gone.

@RantingThespian Год назад

Ditto. I'm not interested in the other SciShow content, just the space stuff.

@badmonkey244 Год назад

I'm going to miss scishow space

@SilentKaliSmoker Год назад

Does this mean episodes will come more often? I don't mind the two channels I enjoy them both. But if they will become one, it would be nice to see a extra video or two each week. It's nice to learn about the world and universe, especially new things I'm not in the loop about.

@carsonsullivan3452 Год назад

@noytelinu Год назад

3. Psych was canned as well.

@JonathanMickelson Год назад

Sad to hear the move, as there are fewer quality SpaceSci specific channels. Thank goodness PBS SpaceTime will still hold that beachhead!

@DemPilafian Год назад

If the content quality remains the same, does the specific channel matter? The only downside I can think of is for viewers highly focused on space science who will now have to scan the main channel for specific content. Is there another downside? Does anyone know the motivation to merge channels? The Algorithm?

@2009mouser Год назад

I remember when SciShow space broke off of SciShow T-T

@2010joen Год назад

If you use Virtual reality head sets for VR games, there is a rating for games that may cause motion sickness such as roller coaster rides or ISS simulator. Your eyes are telling you one thing and your vestibular system is telling you something else and you can become quite sick. I think that subjecting astronauts to such games would be a way to know who is subject to motion sickness or not. And it lends weight to the sight V vestibular system hypothesis.

@omgraggy5358 Год назад

In ordinary games aswell. When it has a low FOV

@ppartsx Год назад

space dizzies sound a lot like VR dizzies. takes a few days to get over the motion sickness of playing VR also. interesting to think it could be ear crystals that cause such a difficult transition on the perception of movement in uniquely different environments than we typically need to make our way through.

@lovejonas95 Год назад

Goodbye SciShow Space! I'm glad that you guys will still be making content on the main SciShow channel though!

@JustMeJH Год назад

I love this channel! Thank you for amazing content for the past nine years! I’ll be looking forward to seeing more space stuff on the main channel!

@graemehirstwood670 Год назад

Tis is a total bummer. I look forward eagerly to SciShow Space episodes coming out and this will leave a big hole in my viewing pleasure. Perhaps a final farewell retrospective episode should be aired?

@CaptainMarvelsSon Год назад

I watch the channels collectively not paying attention to which channel I am on, but this will probably confuse a lot of not-regular viewers.

@euchiron Год назад

I remember hearing about tests involving simulators which showed a video feed that differed from the motion of the simulator, and that seemed to cause the greatest motion sickness. The otolith asymmetry hypothesis seems promising

@JustAnotherBuckyLover Год назад

This is why motion sickness is so prevalent even among experienced fighter pilots (let alone us regular folk) when they use simulators where the generated motion doesn't exactly match with the visuals. Doesn't matter if it's a professional flight sim, the newest VR ride at an amusement park, or whatever. I know that I'm prone to motion sickness anyway, but those rides, my god... I'll be throwing up within minutes.

@jerelull9629 Год назад

Sea sickness is definitely a "thing", which seems related to SMS. The one thing that I noticed "water world" got *right* was "land sickness". After being on the water a few weeks, sailors definitely can get nausea from the world NOT moving constantly.

@DanielSolis Год назад

Thank you for wonderful years! I've been and will continue to be a loyal watcher.

@kissmeimarockstar Год назад

A genuine thank you to everyone involved in the SciShow Space page and content, see you next time on SciShow!

@mikamekaze Год назад

I remember when they first split up all the scishow topics between different channels. Sad to see space get the short end of the stick :C

@Vasher-The-Destroyer Год назад

Thank you guys for getting me into learning more about space your the reason I got the highest grade in my faith grade school in my science class sure it was a long time ago but hey why not As well as many year other videos you've uploaded over the years So thanks Sci Show

@DonsArtnGames Год назад

o7 ... SciShow Space, you will be missed. You were one of my favorite channels. I hope to see a revival of you soon. HANK! BRING THIS CHANNEL BACK TO LIFE!!!!!!

@jasonrowe3847 Год назад

I see a number of people, with too many channels. For the most part, consolidation makes sense, at least to me. Keep up the good work!

@ImmortalAbsol Год назад

😭 first Psych and now Space, SciShow don't leave us 😭

@oopsy444 Год назад

But didn't you branch off this channel specifically bc space was so popular? I'm sad to see it go ive been subscribed for these 9 years but glad I won't be losing content bc im already subscribed to the main channel and have been for over 10 years! I look forward to your new content back on your og home channel!

@majorfrostbyte7022 Год назад

A few years back they split the patreons and I felt bad because I could only support one, so I stayed with the main channel even though I liked both. Now they are combining the two channels, so I at least feel like I'll be giving Space the love it deserves again. But I wonder how they'll handle it on Patreon. In any case, my support at the main channel will continue.

@jimranlet7363 Год назад

But pilots get sensory conflicts quite often in instrument conditions. In fact that’s why ignoring your senses and focusing on what the instruments tell you is a large part of the instrument rating, but we typically don’t get feeling sick - jus sometimes disoriented.

@Life_42 9 месяцев назад

Good thong is SciShow has more subscribers, mesming space related stuff will be heard and watched by more people!

@veramae4098 Год назад

Scott Kelly reported at first that he was fine returning from his year on the space station, although weak -- despite having faithfully followed exercise routines. Then the 3rd day he woke up his ankles were the size of his thighs. It appears his body had "forgotten" how to move liquids around. Got worse and worse and took him over a year to recover ... and was painful. This guy had done some very tough jobs for the American military, but near the end he says something like "... if America still needs hard work done they can ask someone else." "Endurance" is his book about his experiences in the space station. Great read.

@DarkWorldOrder 9 месяцев назад

Bring this channel back please. Was my go to for space news :(

@noytelinu Год назад

And yet again you break my heart. Why? Concentrating it all into Scishow just saddens me.

@jerelull9629 3 месяца назад

As a cruising sailor, it's common for long-distance cruisers starting out on a long voyage to get sick as a dog the first few days of every trip. Even as short-distance cruisers, Neither my wife nor I usually get sick on a day-long sail, but after being ON the boat for a weekend or week or month, when we get back to our slip, I get a little land-sick while I'm taking that luxurious shower. Mostly it's a bit like having drunk too much, the room spinning mostly

@juanmelendezrivera6085 Год назад

Motion sickness is common in orbit free fall. Having a rotating section with centrifugal gravity may control (or worsen) space motion sickness. We need gravity for our health. Eventually, there will be rotating space ships and space stations with centrifugal force artificial gravity. Thanks.

@TigerHawk709 Год назад

I remember when SciShow branched out into the multiple channels. I hope the re-consolidation means we still get the same amount of content as the multi-channel platform and that everything is otherwise still well with the SciShow teams. I'll still look forward to more from the main channel and all the hosts!

@greycastro1009 Год назад

Are y’all gonna fold SciShow Pee back into the main channel too?

@SuLokify Год назад

It's interesting how incredibly effective atropine is for this particular type of motion sickness

@kinesta Год назад

Great idea!

@KarlBunker Год назад

Robert Heinlein (and probably other SF writers) predicted that space sickness would be a thing before anyone had flown in space.

@airplayn Год назад

Heinlein was no stranger to illness, he got booted out of the navy for TB.

@MajaPlejada Год назад

...dang, I just subscribed last week.

@StitchesLovesRats Год назад

I prefer different channels. Good for when I just need some spaceness.

@DaniloGP94 Год назад

Saying good bye to SS Space is so sad! Thanks for all those ears! I'm gonna stay tuned on the main channel.

@usb6000 Год назад

Wow and I just recently subscribed

@BMrider75 Год назад

Sea legs, when sailing on the sea.... I'm never sea sick when out sailing, but when coming back ashore after several days at sea, it can take days of feeling woozy before my land legs return. I'd be sitting absolutely still, and the room is gently slopping back and forth around me. Vestibular disturbances...

Год назад

Well, we have symptoms on the ground which is also not really known why it happens. MDD is one, which is basically they the adaptation when changing reference frames is broken and sort of never works. So after a cruise or flight, the dizziness never subsides or very slowly.

@guytheincognito4186 Год назад

I haven't seen the video yet but my assumption is that due to the inner ear having evolved in an reference frame in constant motion(acceleration) and now they're occupying a reference frame without constant acceleration(in space away from larger accelerating bodies) their ears have to compensate for this lack of being in an constant acceleration and it is this compensation that in turn causes a feeling of motion sickness. Kind of like a reverse motion sickness, due to the balance center in our ears needing to be evolved to be stable and centered like a bubble level in constant acceleration due to living on the surface of the revolving earth, the lack of this acceleration is throwing our sense of motion/balance off.

@stax6092 Год назад

Gonna miss this Channel.

@darknebulae7470 Год назад

Well, this blows dogs for quarters. I like the separation of the content.

@starrywizdom Год назад

You better be keeping Savannah! I love them 💜

@PuffyCataphract 6 месяцев назад

When are you coming back? We missed you guys!

@chronosferatu345 Год назад

I suspect some astronauts may experience something similar to my friend as the trip into space is likely tough on the body and weightlessness likely shifts some of the internals in their spine making the tendons and muscles in the body tense and relax a little differently. A close friend suffered a neck injury a few years ago and was extremely dizzy for two solid years afterward. He still has random bouts of dizziness and often complains of constant stiffness, tendon and/or muscle pain in his neck. He said that it felt and sounded like a loud pop just underneath his skull where the spine connects and has suffered ever since. The doctors he went to supposedly couldn't find anything wrong with his vestibular system and was told they couldn't do anything for him. He turned to massage therapy after a car accident and mentioned that, for him, massage in the head, back, and neck area was just about the only thing that helped ease the dizziness. It may or may not be relevant, but if someone is looking for answers about unexplained vertigo unrelated to the inner ear, the spine and neck area, and maybe how they connect to the head, may be an alternative avenue of study or focus.

@joejohns3543 Год назад

+++ Loved this channel

@I.____.....__...__ Год назад

3:25 What's happening is that the spinning around in "zero-g" causes some otoliths to become dislodged and float around in the inner ear, causing the astronauts to get a perpetual state of BPPV, and without gravity, they can't do Epley or other maneuvers to fix it. 🤢 This explains why it happens to some but not others.

@Spacehoneybadger Год назад

Can you do a video of all the space start-up launch companies and what they are up to?

@wonder_platypus8337 Год назад

Honestly kinda cool to have SciShow pretty much all together again. Makes me feel young lol.

@SecretRaginMan Год назад

5:38 Talking about SpaceX and the Polaris Dawn mission(s), which will use a Crew Dragon launched from a Falcon 9, but uses an image of NASA's Artemis I launch using an Orion crew vehicle on an SLS rocket . . . Classy.

@Iamdillson Год назад

See you there!!

@lawrencedoliveiro9104 Год назад

I love the irony of that cartoon depiction of an astronaut seeing stars ... while out in space.

@ajaymalik4473 Год назад

Scishow: we don't know why astronaut got motion sick. Also astronaut: Go ISS 3000KM/s go

@StevenMiller-cx6co 7 месяцев назад

I’m glad hank did the last episode rip sci show space

@Life_42 9 месяцев назад

I miss this channel!

@Stickiestboi Месяц назад

Bruh why, this was perfect to binge watch

@Monoman2345 Год назад

Been subscribed to this channel since launch this is so sad

@culwin Год назад

Just gotta get my name on the last SciShow Space video

@wonder_platypus8337 Год назад

As someone who plays a lot of VR and was lucky enough to never feel motion sick, I often wonder why I am so lucky compared to others who can barely go a few seconds without waves of nausa. Someone once suggested to me that it was how informed I was. I KNEW VR sickness was a possibility well before I tried VR. My knowledge of it may have lessened the symptoms. Who knows. But it fascinates me.

@bengoodwin2141 Год назад

My hypothesis for if it happened more reliable would have been that the vestibular system would not be able to tell which direction you are facing and moving, so you'd get dizzy. Turns out they looked into that.

@macgoryeo Год назад

would be interesting if there's some kind of therapy to change the size of the "ear stones" to have similar sized stones in both ears if this would have an effect of space motion sickness

@StarlightJosh Год назад

a video on the 6 newly discovered galaxies??😭

@mandym7008 Год назад

I don't understand why some people getting SMS and some people not getting it is a problem for the sensory conflict hypothesis. After all, some people get motion sick reading in a car and some don't - or is it that sensory conflict is also not a complete explanation for why people get sick reading in cars?

@lamedude3332 Год назад

RIP big homie sci show space

@ReginaldCarey Месяц назад

They were test pilots. Each with decades of experience it shifting reference frames. They were also strapped in with little chance to move around. It’s not a fair comparison.

@azdaze227 Год назад

I mean, strapping to the top of a missile and launching into zero gravity at crazy speeds then maybe staying there seems like the perfect recipe for nausea.

@makelgrax Год назад

4:20 if that holds true, it's crazy that the brain can just adapt like that!

@BackYardScience2000 Год назад

But why move the channel? And after 9 years of being its own thing? I don't get it. 😞

@celticlass8573 Год назад

I think it's because there's no gravity holding down the brain and organs. When you get motion sick, the worst feeling is when there's lots of side-to-side movement, or acceleration and deceleration over and over. In both those scenarios, our organs shift around.

@jamesleatherwood5125 Год назад

Ha! thats Funny! didnt you make this branch of sci show because you had too many sapce videos on your main channel? I guess space is sexy enough to take front and center stage again! yay! :P

@NewMessage Год назад

Not the SMS message I wanna get, for sure.

@Subscriberfromwayback Год назад

I think the move is a great idea because youtube's stupid Algorithms show me sci show but rarely sci show space so this means I am more likely to get them all :)

@smindigo Год назад

Was hoping SciShow Space wouldn't get axed as well after you axed SciShow Psyc, sad to see it go. Will the frequency of uploads remain the same on SciShow or will it increase to make up for the missing content here?

@toxicwar Год назад

i wonder if this has some similarities with how people with vr equipment feel dizzy at times. I heard something in relations to the whole ear thing.

@okankyoto Год назад

Sadly with Polaris -unlike NASA- the results will not be published to the public. Its one of the benefits of the public program vs. a private one.

@doxielain2231 Год назад

I mean, we do. The vestibular system is mediated by fluid in the semicircular canals, and that gets confused in microgravity with the liquid not pooling at the bottom. Ok, I should watch the video now.

@derekhiemforth Год назад

Guess I should go subscribe to SciShow... 😆

@NicholasHay1982 Год назад

Aww, gonna miss my weekly space fix

@keithknapp5190 Год назад

Scishow kids has 100000 subcribers

@heyokexd2542 Год назад

Otoliths interact with Magnetic Fields as well as Gravity. Human physiology is currently experiencing a myriad of adaptions in preparation for their potential Future as a Wandering Species (Spacefaring). Vestibular Sensory Seeking 'disorder' is an intermediary stage of Human otolith adaptation. Humans that are identified with this 'disorder' and the subsequent generations of their progeny will not experience Space motion sickness.

@1969kodiakbear Год назад

Sick and science. This is so cool. By the way, I have difficulty communicating because I had a stroke in Broca’s area, the part of the brain that controls speech. 2/8/2021 but I lived again. (My wife helped me compose this.)

@RetroGameSpacko Год назад

I need a solution here on earth too. I wanna be able to play Racing games and similar in VR. Anything that doesnt have teleporting as movement is unplayavle to me.

@samwill7259 Год назад

Well then...time to move to SciShow I guess! Here's to the next years.

@Mikesblades 9 месяцев назад

Bummer

@latenighter1965 Год назад

Inner ear fluids. Duh. Car sickness, video game sickness also works the same.

@BanjoGate Год назад

Interesting... In December you said you were cutting back on Space videos, now you are consolidating to your main channel? This does not sound like the SciShow Space videos aren't doing very well.....

@sandbridgekid4121 Год назад

So at lot less Space content unless SciShow picks up its production cadence and schedule.

@Al-cynic Год назад

When Physiology doesn't explain the problem, often psychology does. Pity psychologists dropped the ball. I think (from never getting seasick) that it has to do with the psychology of being able to be out of control. That is, if you can take altering drugs and be fine, you can deal with motion sickness! If you have to be in control all the time, you are sickened by the loss of control.

@OsirisMalkovich Год назад

NASA: Space motion sickness is kind of a mouthful. Let's shorten it to SMS. That's not being used to mean anything else is it?

@Rosyna Год назад

I’m super angry about this video for leaving out one important theory: the nystagmus hypothesis. This links motion sickness not with the ear, but with the eyes (via the vagus nerve). Specifically, the stretching/traction of ocular muscles caused by the motion of the head not matching the motion of eyeballs. Context: I have uncorrectable strabismus and I couldn’t understand why I got so nauseous when I watched TV or something in my periphery didn’t match my “main” eye. Turns out it was motion sickness caused by my brain trying to force a resolution of the conflicting images via constant, involuntary eye muscle adjustments.

@clarek2158 Год назад

No way! We want you to reconsider

@ArawnOfAnnwn Год назад

First Scishow Psych, now Scishow Space. The consolidation continues. There's probably a lot of audience overlap between the Scishow channels so I guess this makes it easier to deal with advertisers.

@Mat-hr1dg Год назад

But isn't this kind of self explanatory? We can trick our brain into looking upside down (or rather stop correcting the upside down signal our brain gets) with special glasses. After some days the brain shifts the image into the correct orientation and it will take days to retrain it AGAIN. So I guess the last explanation makes the most sense. We are simply accustomed to interpret certain signals a certain way and if that system is disrupted it will take some time to adjust. It would fit the criteria of setting in for 3 days at the beginning and after the end of the zero G experience.

@JustAnotherBuckyLover Год назад

I mean, yes, it's self-explanatory insofar as we know that motion sickness is caused by a mismatch between the inner ear and visual signals. But that still doesn't explain what the precise mechanism is underlying it for SAS. Even on earth there are three ways that motion sickness commonly occurs; firstly, as the video shows, your inner ear picks up motion but your eyes don't. Secondly, your eyes perceive movement, but your inner ear doesn't - such as while using VR headsets or even playing some video games. And thirdly, your eyes and inner ear BOTH pick up motion, but they don't match well enough. Sometimes that can be driving slowly down a rough road, gently rocking on a swing, or (my personal nemesis) flight/roller coaster simulator booths that move around on pistons but still don't match the visual movement well enough. The last one is why the VR/simulator rides at amusement parks have the worst rate of motion sickness of pretty much any ride. I went onto a rollercoaster simulator and I was throwing up in less than five minutes, it was the worst thing I've ever experienced. So yeah, we know why, at a basic level - but as the video clarified, losing 3 days because you can't see straight or stop puking (or the meds are knocking you out) and then another 3 when you land again isn't ideal. So it would be more useful if they can figure out the exact mechanism, and hence predict who is most likely to struggle, and find more effective ways to prevent or treat it.