What will it really take for a Mars human mission? - SpaceX's Mars Plan
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- Опубликовано: 28 май 2024
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SpaceX's Mars Plan is something we all want to see become reality. But what will it really take for a Mars human mission? We are all very excited to see the continuing development of SpaceX’s Starship and the new momentum for Starbase 2’s construction over at Cape Canaveral. We are still some way off seeing this system in full swing, however, in the grand scheme of things it won’t be long before we are witnessing not just orbital Starship launches, but crewed Starship missions that will take humanity back to the surface of the moon, on even longer duration deep space flights, and eventually out to Mars and beyond. But first, I’m sure you have a whole host of questions regarding how exactly humans can survive long duration spaceflight, and in this video we are looking at exactly that.
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Have a great week everyone! For those interested in the presented Curiosity Stream episode, you can check it out at Curiosity Stream at curiositystream.com/marcushouse
If you already have it, the direct link to the episode is curiositystream.com/video/1144.
Why does no one else go to the moon? Or has gone to the moon since then? that is very odd. Seems strange. We need a New American Dream. Family in Space? Find your own Planet, and Join the Federation of Space Planets. I don't know, but just owning a House seems Dated.
It actually is an amazing documentary streaming service. Highly recommended
Have you thought about joining Nebula?
And Elon wants to try to raise children in that kind of environment? Madness.
Can someone explain how Starship is supposed to land on the surface of the Moon without some kind of landing gear system? We've seen that thing tip over on those little nubs before, if it falls over on the Moon they're stuck!
“Being socially isolated for months or years” introverts, “I’ve been training my whole little for this!”
Introverts unite! .. Or we can just stay home.
The problem with introverts is they still have to interact with the crew in close quarters as a team with little personal space. Starship is big so working in the hydroponic gardens can be a break. Angry Astronaut has a good video about Starship Mars configurations.
@@Obsidian762
Introverts UNITE!!?? 😳🤯😱
Are you crazy?? 😵😑
Yeah whenever I hear that I think that sounds great. I'll take an empty Starship lol. I can water the plants and look after the cattle in one of the cargo ships. I like building wooden model ships, so I'd do that to pass time.
The Russians trained a bunch of male astronauts and one female for isolation tolerance purposes by isolating them all in a chamber. They had to remove the female astronaut trainee because she started complaining about the male astronauts constantly ogling her and some making snatching motions with their hands in her direction.
I was 4 years old when Man went to the Moon for the 1st. time, and I remember running outside after they landed and looking up at the moon and knowing they were there was such a trip.
We're a quickly shrinking population of people who actually looked up and seen the moon that never had a human on it.
@@texan-american200 There's no difference before and after. The moon looks the same, behaves the same, and is the same.
@@xDLiLi1337
I don't think that you understand the meaning of what I'm saying. Yes, the moon is the moon, but there are those who saw it and wondered if anyone would ever go there and there are those who look at it and wonder if we'll ever return. It's perspective and not what it looks like. You're obviously one of those who never seen it before it was explored.
@@texan-american200 The last person to walk on the Moon did so a year or two before I was born, but it took me years to really understand people had been to that pretty white thing I see in the sky. I still look up and find it hard to imagine the footprints. Different brain, different perspective, I guess. :)
That's commendable, considering you were only 4 years old.
I’m always looking forward to watching your videos Marcus, every Saturday I pick up my phone and wait for your videos, but then there’s the unexpected mid week video! Can express the appreciation enough for the extra effort.
Awesome of you to keep coming back. I appreciate you and all those that do the same!
Nope.
Won’t work as we will soon find out once they stuff a human on a starship and send them into deep space. Galactic and universal radiation is not one direction. This deadly radiation comes from all directions and beside water is only a small part of shield and will not stop ALL deadly radiation.
Also let us not forget how this deadly radiation will eat away at the components of the ship itself. Think Chernobyl. What happened to the helicopters that flew over the plant when they tried to cover the core with boron and sand? They literally disintegrated.
Now don’t go off about how deep space probes have done just fine. Take note in the heavy gold plating use they used for these craft.
My prediction you will never see a human orbiting Mars alive before the magnetic reversal and that my friends is why you are seeing so many oligarchs trying to blast off this rock with accelerated time lines. Trust me when I say they won’t be disappointed to find out they never will go to Mars as their goal is only to hide out on the back side of the moon like previous humans have done in past epochs.
I feel the same. Much thanks!!!
It's worth mentioning that you estimate 1000 mSv over 30 months for a mars trip, and that yes that is far higher than humans on Earth get on *average*, but citizens of Ramsar Iran might receive up to 650 mSv in that same amount of time. So the differences there may not be as dramatic as the "65x the average on earth" statistic makes it out to be.
I new Iranian people might be useful one day 😇
but the radiation on the surface of mars of the same type as a nuclear bomb creates when exploded will be a problem, before you can dig a hole to try and get away form the radiation you will die from it, there will be no way to survive on the surface
Well not only that when you get to Mars you can build shelters covered in Martian soil. Or as we know water can protect from radiation. Just build the shelter with a lining of water in between the soil and the interior.
Let's hope he can do it in his lifetime, people walking on the moon and mars would be another awesome milestone for this century.
I somewhat see Starship as a means to get a lot of mass to orbit quickly. To be honest, I am kind of wishing to see nuclear propulsion making a big comeback. Especially as a Mars transfer vehicle option.
They better do, because otherwise we'd be bowing our heads in shame to the *insane* 20th century.
@@MarcusHouse I have solid faith in SpaceX being able to use fission reactors to power a Mars Colony. Wish I could say the same for the greedheads in charge of the electric companies here on earth. As far as generation here on earth, prefer fusion or at least Thorium fission, if you follow fission facility accidents it is usually caused by financial corner-cutting if not in equipment then in training.
@@MarcusHouse When we finally come to terms with the fact that "colonisation" is a distraction and we settle down to fulfilling the challenge of a realistic, but limited exploration of Mars, we will need super heavy cargo vehicles to get lots of stuff into Earth orbit. If Starship succeeds (both in engineering and economic terms) then it could prove a useful workhorse cargo delivery vehicle to get stuff relatively cheaply into Earth orbit. However, Starship will never be carrying humans to Mars. There is no "business case" for this. And for a realistic exploratory mission to Mars, we need a vehicle that takes people safely from Earth orbit to Mars orbit and then returns them safely to Earth orbit. A true space-faring vehicle, not a vehicle designed for planetary ascent/landing. Starship is an inherent compromise.
@@MarcusHouse ISRU & aerobraking bring about
Similar step changes in overall efficiency as nuclear thermal propulsion. Would love to see the technology get advanced a lot further though. Gaseous core reactors or something like the nuclear salt water rocket may be what enables large scale colonization of the solar system
As usual, a magnificently assembled plethora of intellectual ideas and information. You sir, have once again, along with your crew, outdone yourself. Thankyou
Thanks very much James!
except if you actually compare facts to the bs he says. Just calculate the volume of water needed for the shielding for example...
@@jakubmusil1109 I may be wrong, but you'd need a fair bit of water to get to Mars. Surely using that as shielding would work, at least for most of the trip.
Great video, as always. Whenever I hear of "difficulties of space travel/colonizing Mars", etc., I remember the quote from Jim Lovell: "It wasn't a miracle that we landed on the Moon. We simply decided to go." We as a species decide on what are important challenges. Once we make up our minds and focus our efforts, we can probably eventually do just about anything.
Utter nonsense.
Wanting to do something isn't going to make people able to actually do it, when it is either impossible in practice or theory.
People wanting faster than light travel aren't gonna get it no matter how much they want it, because it is physically impossible.
Going to Mars is also impossible, now, in practice.
Going faster than light is not impossible
Going to the Moon for 3 days and returning compared to even a minimal Mars trip is like comparing apples to elephants.
Van allen belt. .....anyone??
@@rorygibbons3310 sure why not. lets go faster than light by spitting while we at light speed.
Hello Marcus. I was, at 17 in 1969 the youngest accredited journalist to view the Apollo 11 Saturn V liftoff at the Cape. Truth is I was a high-school student in California who had a friend and whose father was Editor of the local newspaper and who gifted me an introductory 'he's a journalist' letter for NASA. I live in Florida now and am the father of an 8-year old who loves to spend her spare time checking out Galaxies and Black holes and who will, hopefully, get to witness many StarShip launches.
Marcus I think you do a great job. My entire life has been literally praying for what is currently happening regarding space and Mars and I wanna see us go to Mars before I die.
Keep up the great work.
Regards, Bruce
I particularly enjoy how Marcus makes positive remarks about all the rocket activities of different companies, even the ( how should I say ) interestingly unexpected functionality outside the optimally intended design objectives, which yield valuable data for evolving the next iteration. After all, rocketry is not easy. :)
@P A Radiation is at least easy to measure. Biology on the other hand... well, it's a good thing research has been conducted for so many years.
I see Marcus already made a post that addressed this, but even before I saw it, I came away from the video thinking we won't really be ready for Mars until we have nuclear-powered ships that spin to simulate gravity, ideally with better radiation shielding. Starship looks as if it will be incredible as a workhorse that's cheaper and safer than the old Shuttle, and even for establishing colonies on the moon, but for human presence outside cislunar space, we'll need something better than chemical propulsion.
Why not tether two starships together and let them spin around each other?
I find the issue of eye problems induced by long term zero G an interesting one. Not like any Mars colonists can see an optometrist or ophthalmologist out there, I think there's a very real risk of several Mars dwellers getting intractable vision loss or even blindness on a Mars mission
The diagnostic equipment and treatment capabilities for use by a trained ophthalmological technician are within reason to bring along on a Mars/Moon mission. Consider also that imaging from these devices can be transmitted to Earth-based physicians to then guide on-board techs. The most likely type of damage to the eye include exposure of the lens to radiation as well as zero-G, retinal vascular changes, macula edema, and distortion of the cornea and trabecular meshwork, in addition to the now-known effects of microgravity. Conventional apparatus such as the slit lamp, applanation tonometer, ocular coherence tomography, and (for retina tear) yag laser, are small, light and relatively easy to use. A likely impact of some of the above eye problems is increased intraocular pressure IOP that can lead to glaucoma but is manageable with ophthalmic eye solutions for several years. So I have an optimistic outlook on this particular :) .
Simple. Tether two starships together at the nose with a long cable and spin them end over end to simulate gravity. Problem solved.
@@sebione3576 No
The amount of rotations per second needed is uncomfortable to humans
@@sebione3576 If only it were that simple, lol!
@@teaser6089 That depends on the distance to the rotation point and rotational speed. Tethering two Starships or one against a weight allows for lengthening the tether and lowering the rotational speed and thus solving the discomfort.
Love the Midweek content Marcus, I was hoping you would do it as a lot of channels have been going that route with Documentary style Vlogs and I am enjoying yours, from South Africa. Thanks for all the informative and engaging content.
Thanks Thomas!
In-depth on each aspect of this episode would be great! Thank you so much for your hard work!!
I love seeing your program normally, but this one with the plunge into the possible problems that we can count on the travelling and stay in Mars is really well don, congrats 👏🏻👏🏻👏🏻👏🏻👍🏻
Thanks for your work on this. Good job.
Well done on this special mid-week video. I’ve watched it several times and learn new things each time. Great research, production and delivery.
I learned so much from this video, Marcus! Thanks for the bonus mid-week video and as always love your weekly videos, too!
Thank you Marcus for a surprise Tuesday video! I look forward to every Saturday video so this was an unexpected bonus!!
My husband and I watch you every Saturday and are thrilled that you are adding content. Wonderful review. From a particulate radiation standpoint, I wanted to add a comment. We , as humans, are really good at recovering from radiation exposure. For instance, the NCRP reports an average of 6mSv annually for people in the US; however, if you were to receive a cardiac catheterization you would receive about 1 Seivert over ten minutes. Procedures involving interventional radiology can last up to 30 minutes or more. The ICRP recommends that studies far exceeding 3 Seiverts (30 minutes) are terminated, allowing the individual 24 hours to repair before restarting the exam. Basically, we fraction out the amount and it is x-ray, not particulate. We can handle radiation well and repair quickly. On the other hand particulate, especially cosmic, is very interesting. Alpha is stopped by a sheet of paper, Beta needs an inch of wood, but the water bags are for neutrons (fast) . Those neutrons could be a problem but if water barriers were utilized, the body could be spared. In Nuclear Medicine, they don't wear lead aprons, like the X-ray techs, because they are dealing with gamma, higher energy and don't want to stop it. Just let it pass on through. We love all your stuff. Thank you for everything that you do and the team too.❤
It is worth noting that although artificial gravity solutions will exist at some point (I assume) which spin to create that centrifugal pressure, it is simply not practical with Starship. I imagine you would nee nuclear propulsion on a massive rotating transfer vehicle that simply travels between Low Earth Orbit, To Low Mars Orbit and return to LEO to be refilled. This is something humans won't tackle for a lot longer. Certainly not within the next decade (would be nice if I was wrong about that).
Need nucler rocket engine. Or artficla gravity
Thanks for making this video, I left a comment on your Saturday video raising these issues. It's a big jump from sending satellites to orbit to sending humans to orbit and beyond.
Cheap and easy artificial gravity is to link two Starships with a steel cable, then spin them.
Buzz Aldrin worked on a Mars Cycler transfer vehicle design.
Lets be real, Starship is not a practical ship for a trip to mars.
@@marvindebot3264 True. Could be possible to loop back to Earth and then start again. Means you only get one shot at deploying the landers and they are on their own.
Dear Marcus, thanks so much for offering such thoughtful space updates every weekend; this video is a great reminder of what it will take to design and engineer human missions to mars. Let's hope development of necessary capabilities turns out successful in the next decade or so! Best regards from a space follower from the Netherlands- Stefan.
Thank you for another episode, I think that this one was best so far....everything what I was expecting you said, briliant you are the best
Great indepth analysis. Unfortunatly, I suspect it will be our 1-G physiology that will be the biggest challange to deep space exploration. IMO, the easiest fix would be an engineered solution. Create an artificial gravity environment by spinning the vehicle.
That or gravity plating as seen in nearly all sci fi ever…one of only three things shown even back in the original Star Trek we haven’t yet gotten a handle on, the other two being FTL travel and replicators
However, as someone who has read a LOT of science fiction and studied gravity in college, I mean this as a positive offering of potentially helpful info (as opposed to the negative condescension text based media can be all too easily misinterpreted as)
There is a subtle yet key difference between ARTIFICIAL gravity, such as gravity fields generated and projected through deck plates like in many sci fi shows, and SIMULATED gravity through spinning, like in 2001…
I hope that pedanticism is taken in the positive helpful manner it is intended :)
Hey Marcus, love the weekly updates! For the first mission to Mars, how about we propose a one-way mission that takes a team of volunteers but are not expecting to return? Conversional but as a 61 year old space fan I would jump on the opportunity to provide inspiration to my grandchildren.
I used to dream of that, but then I realised that learning how I died might very well give people entirely the opposite inspiration. Inspirational stories about death hide what it feels like to die, but if someone dies on-camera or even if enough real details are supplied... well, for comparison, war propaganda hasn't shown a truly realistic portrayal since the Battle of the Somme was filmed in 1916. That film, intended to be propaganda, turned a lot of people off war. Humans don't accept death unless it's romanticized.
The whole video was just great! Well presented and key points nicely explained. Thanks!
Very interesting and informative video. A video about the daily life on Mars would be cool!
Hallelujah! Bonus Marcus! Thank you.
The exposure amount over the transit and Mars time is dependant on how much shielding you have during certain periods of time. A lot of the exposure alarmists for a Mars mission are based on minimal shielding and constant exposure during the duration of the mission
I still maintain the belief that any long term journey in space will require some type of gravity along the way. Without it, I don't see us becoming interplanetary.
Thank you Marcus. This was an awesome piece. It highlights complicated problems that seem impossible to resolve but also reveals the high level of intellect and creativity of those who seem light years ahead of us average humans. Such remarkable people dedicating their lives to these endeavors should inspire us all.
I really enjoyed this one Marcus. Great work by you and the team, so much to take in.
This is amazing Marcus. We learn something from each one of your videos. And fortunately there's on about 48 hours until your next one on Saturday morning!
I’d pictured SpaceX’s first mission to Mars as more an invasion than a singular rocket. He himself said there’d be 100 ships at a time. I’d imagine some of them would be just cargo while others would be crewed. And there you’ve tackled two problems of isolation and Health issues; loads of people mean a community and with tons and tons of equipment means there’d be loads of buildings and places to go to visit your mates. Plus a lot of medical facilities too. This is pretty simplified and anyone can pick holes in any discussion about space travel, but the overall point is the more stuff SpaceX can send to the moon and Mars the better for anyone going there. Great midweek show!
I can see the first couple of launch windows having 2-5 uncrewed Starships. The next couple of opportunities would see many more uncrewed Starships, as well as a few crewed versions. I suspect the first 100+ Starships during a launch window will start no earlier than about 10 years after the first landings.
As usual, an excellent presentation of some factors involved in traveling to Mars that usually aren't discussed or even considered by individuals that maintain romantic idealizations of traveling and living there.
Great video! Your research and presentation are outstanding
I'm Ready been in lockdown for 2 years fully trained for this mission bring it on.
My feeling is, with the (hopefully) greater mass/price ratios, the solution to microgravity is primarily an engineering problem, and I think this should be perhaps the primarily focus for the crew mission to mats and beyond. Using rotation to simulate gravity will address a lot of these medical microgravity problems,but obviously takes a bit more up front. I think the way they did it in The Martian with a ‘transport’ ship that stays in orbit and does the ferrying with the structure to do the ‘gravity spin’ seems key. Park it in a good spot (moon orbit? Lagrange point?) and use regular starship to get to it and ferry fuel to it. Also, and I think musk has mentioned this, but we should send a metric fuckton of supplies and material ahead. Go big. I think something like 100 starships full of various cargo to build and maintain the habitats
Yes, the clotting problem is much more manageable with artificial gravity combined with special clothing that regularly pressurizes different extremities. I'm surprised that there hasn't been a fatality on the ISS so far considering how severe this clotting issue is in microgravity. Regarding radiation, I'm certain that it can be managed with the right metabolic regulation, which means enhanced apoptosis and autophagy regulation. It's basically a prophylactic cancer treatment but without chemotherapy. The only reason that this isn't applied on Earth is the greed of big pharma. Big pharma generally isn't interested in prophylactic treatments and they conspire with the health agencies to prevent regulations that would allow recommendations for prophylactic measures. There's so much more money to make by treating illnesses that remain unprevented.
Rotating space craft is an engineering problem that is beyond complex. Using spin stabilisation on a craft consisting of static components is straight forward , but when you have a crew who move around and who are in turn moving masses around within the craft, then it's a recipe for trouble. Move any mass in a direction opposite to the direction of rotation, and it's going to be free-floating and out of control, resulting in injuries and destruction, and directional stability of the craft will be compromised. Crash, bang, wibble, wobble. Space sickness. And when the crew arrive, bruised and battered, nauseous, and see that Mars is a toilet, they'll wonder if it was all worth it.
100 Starships, so that's about 600 refueling launches to go with it if not more, each requiring 3600 tons of propellant for the booster alone. I think you have a problem with scale.
Once you introduced nasa’s RIDGE acronym, I found myself hoping for a 5 part deep dive series with each episode focusing on one topic.
A bit sad that it wasn’t the case but, as always, I learned a lot thanks to you!
Watching this while opening up my store. Thanks Marcus for making this morning a little better
Congratulations! Very good explanation and well done video / images information! I enjoyed it very much!
I have watched this channel for several years and you exceeded yourself with this video, Marcus, which was very informative and made for great viewing. The psychological issues could be problematic enough but it is the longer term effects on human anatomy that would concern me the most were I a crew member.
I love your work; Marcus, you're one of my top favorites for space exploration videos. If I had to offer a critique, I'd ask that you slow your delivery a tad since I sometimes have to rewind a bit to catch everything you said. You do so much research that your content is rich with information, but you speak rather quickly so I'm sometimes unsure that I caught it all. Otherwise, I find you just delightful and your videos rewarding. In reference to the problem of low gravity for extended sojourns in space, I take my cue from the Gateway space station folks. I don't know whether they're in touch with Elon, since in their videos they often include Starship approaching to dock with their proposed space station. This, plus their use of von Braun's concepts, immediately puts them high on my list of researchers. It seems it would be easy and reasonable to set Starship rotating around its axis on the voyage to Mars; this would create a sense of "down" towards the outer hull as a solution to the psychological problem, and as a real state of gravity for our biological necessities. That is also where the greatest volume of (dare I say it) space is in the ship. The central volume could be used for storage and imaginatively used towards the nose with that big window as a social setting - a Starship "10 Forward", to rip off a "Star Trek the Next Generation" usage.
Change playback speed to .75
Hi Marcus
Big fan here. Thank you to you and your team for all that you do.
I am a Social Psychologist (PhD UC Berkeley 1997) and have been an academic for the past 25 years or so (including a 5 year position in Australia).
I was very very glad to hear your comments regarding the psychological and social psychological considerations for extended space exploration. Spot on!
I often worry that with all the keen focus on the technical mechanical challenges involved and to a lesser extent the biological challenges involved in space exploration… that kind of emphasis could become a weakness in the overall plan unless more research is conducted on the psychological challenges.
We could find ourselves with a fully capable space craft and with a habitation module with all human biological and physiological needs effectively addressed - and yet the mission could end up being a complete failure due psychological problems experienced by the crew.
The crew’s psychological well being and performance is critical to the success even if all those other things are addressed and all systems could autonomously function to get there and back.
I have researched (casually) the empirical studies of psychological challenges of space exploration and I would say that the extent of the research is well behind the engineering and biological research on space exploration.
I would be keen to see you and your team do an in-depth video on the state of our understanding of the psychological issues that will need to be addressed for an effective mission to Mars or even longer term stays on the moon.
Give me a shout if you agree and would like me to support that effort in any way.
Cheers,
Robert Boeckmann
Very interesting. You covered a wide range of topics pertinent to a Mars trip. Thanks.
I look forward to watching your videos every Saturday. You are the most accurate and in-depth channel on SpaceX that I have able to find so keep up the great work!
Thanks. I'm glad you love what we do.
Regarding the lengthy time in space, do astronauts get training from experienced submariners and deep sea divers?
Also with the risks of the radiation exposer, is there plans and development of providing spacecraft with an on board artificial magnetic field?
@Dave Pin Have you been on a sub?
It is claustrophobic enough with the vessel on the surface and can imagine how confined it must be when it's submerged.
Would have thought a submariner or a deep sea diver may have learnt some tricks on how to deal with spending a long time in a very confined vessel.
Nice one Marcus and team, very informative mate.
Marcus, this video, like all of your videos, is absolutely awesome. Thank you!
My guess is humans on Mars around 2040. I think we have many steps left to practice and master, like landing large crewed vehicles on Mars, and I think we'll have serious budget issues due to the failing US government, economic collapse and climate crisis. Would love to be wrong!
Well we had flying cars 5 years before predicted ...... lol
If all the problems you mention are as serious as you say, and I neither agree or disagree with you, then tackling those should be a priority before sending humans to Mars. After all, these problems may mean there is no money left for crewed Mars exploration and it may therefore never take place anyway.
Using starship as opposed to porkbarrel boeing rockets solves a lot of the budget issues tho. Both in the price of the vehicle itself but also its size/payload capacity that for which currently a lot of effort and engineering goes into, that could be avoided altogether if you just have more space and weight available in the mission parameters to begin with.
I think a moon base would need to be a first step , for practice and data gathering . Also since it a lot closer easier to send help
I really enjoyed this one Marcus. I suspect we may need to create some kind of artificial gravity for long duration trips, like mars. A video on artificial gravity possible solutions would be interesting. Thanks again.
Thanks. Will keep this in mind.
There was an outstanding video on Curiosity Stream about deploying people to Antarctica and how everybody had to be cross trained in multiple jobs, to include being able to assist in surgeries. What a job to have to keep it together for 18 months of transit time plus two years on planet. The nuclear express engine that can transit in 3 months would be such a bonus to the mission. Fusion power is only ten years away?
Fusion is always a long time away, and will probably need a large facility anyway, which will probably not fit on a spaceship. All fusion does is produce heat anyway, that somehow needs to be converted into thrust.
Great job on this Mars visit summary video, Marcus!!!!
There are lots of documentaries on this subject, and I've seen them.
Yours is the best I've seen .... you've collected SO much information and all the great footage was superb!!
Keep it up!!
Just had a thought. If several of these crewed starships would be making the trip to Mars simultaneously, why not attach long cables to the lifting points to join each pair of them together, and then set them spinning around one another to make artificial gravity?
That was actually talked about in another video i watched on artificial gravity on Joe Scott's YT channel (really good channel on all sorts of science/history stuff) they showed 3 ships, 1 in the middle of the other 2 joined by 2 cables, but there are a lot of issues in the artificial gravity idea which is covered in the vid i mentioned.
Because then you couldn't point the solar panels towards the sun AND the antennas towards Mars/Earth.
Also the ships would heavily tend to start rotating/twisting along their longitudinal axis because of cargo movement (humans), requiring constant active attitude controll.
All in all some internal short arm centrifuges to complement daily workouts are much easier to implement and don't require flipping ships.
ESA has done some very promising experiments with short arm centrifuges.
@@3gunslingers altitude control I think you mean
@@rjswas
No. Certainly not.
Every space craft needs some form of *attitude control* to stay in its required orientation.
@@3gunslingers Would these rotating/twisting issues be any worse than what's experienced on the ISS? These are managed by reaction wheels + periodic unloading. Pointing solar panels: set axis of rotation to be perpendicular to direction of flight and put the solar panels on the "sunny side". Antennas: doesn't seem like too difficult a problem.
Great video as always, Marcus. Here’s an idea for follow-up videos: conversations with leading research-teams at NASA and elsewhere working on mitigating each of those risk factors.
What do you think?
Fantastic work, Marcus - so many factors/challenges that not everyone thinks of. Thank you - I've already watched it twice, actually.
Do you think that once we have a fully operational heavy lift system working - namely Starship, that we would then start to seriously think about building a craft in space big enough where artificial gravity created by rotation would be possible?
Well thats one of the first thoughts that have come about the Mars missions, is to tether two ships together and rotate them around each other for gravity. Otherwise, starship will be used for what customers want. So youll have to see who is being serious about building something like that around earth.
This is precisely what we should be doing and it needn't be huge. I'm talking about a vehicle whose purpose is to transport humans (a limited crew, we're talking exploration missions) from Earth orbit to Mars orbit and then return to Earth orbit. In other words a vehicle that remains in space and isn't subject to the compromises that result from having a high thrust propulsion system and all the dead mass needed for the stresses of atmospheric entry. Its not that hard to imagine a suitable vehicle.
Lets build a truss structure (in sections) that spans approximately 150 metres (built in sections). On one end is fixed the habitat module (a single payload). On the other is the bulk of the propellant tankage arranged as tanks attached to the truss. Along the length of the truss we mount the services (solar panels, radiators, comms gear and so on). During transit we slowly spin this vehicle around its center of mass. At 3 rotations per minute the far end of the habitat module would experience 0.7 Earth gs. At 3.2 rpm, gravity is 0.8 gs. We can of course achieve this over a span of days, allowing adaptation.
The neat part is that the mass of fuel needed for a fully propulsive capture into a low Mars orbit is sufficient to act as the counter-weight during flight.
@@saumyacow4435 Its an idea of course, but you could just put a tether between two starships and have two full habitats capable of anything you could want of them.
I vote, if we are going to start building in space, dont beat around the bush and go big.
@@Vatsyayana87 Tethers are hard to stabilise. Its a lot easier with a fixed structure like a truss. Also, Starship are an inherent compromise as a transit vehicle because so much of their mass goes towards things you don't need in space - large engines, lots of structural mass and heavy thermal protection system. This mass is better spent on things like radiation protection, crew comfort and survivability. In the end, a space-only transit vehicle is the best solution.
I think the Expanse method of continuous, constant acceleration/deceleration to produce artificial gravity is probably easier to accomplish. You just need to carry enough fuel, with the added bonus of much shorter travel times.
That said, research suggests rotating too fast becomes disorientating very quickly and induces motion sickness. I think I calculated that a rotational radius of 1km at 1rpm gives you approximately 1G on the outer edge. So that's what you should probably be aiming for. (And I think this should be the optimal target for orbital space stations too. Build them as solid rotating discs with lower gravity towards the centre ("upper" levels) for research/sports/etc.)
You failed to mention how robots would need to arrive first and build habitats first which would take years. Sending humans to an unprotected surface on Mars is a death sentence and it will never happen that way. There would be no way home without a launch pad.
An excellent bonus video.. Usual great content. . Thank you MH + Team for the extra upload
@MarcusHouse : Wow! Really great video covering more than just space news -- super job!
Great video, Marcus! These are the questions that raise serious doubts in my mind about the viability of Mars colonization by humans, as much as Musk sends to trivialize them. The evolutionary selection pressures on humans will be so high that a new species will have to evolve to successfully live on Mars. The outcome will be evident long after my time though. Keep on making great videos.
Terrific, thought provoking compilation Marcus and team- only added to by today's weekly update. Well done all!!
2nd viewing of this AWSOME content..! Inspirational , educating, and very well presented. The graphics really help the viewer understand the complexities of Aerospace Engineering. Cannot wait to see this all become a reality quite soon...!
There is zero chance Elon will send a crew to Mars in his lifetime!
Elon might not be on time, but he will deliver what he promised
@@kerbodynamicx472 again, not in his lifetime!
His not a government his not weighed down by opinions that don’t matter the problem is jealousy or people who think they’re important but they just like making problems
If 20 starships land and return with no problems landing what’s needed if people want to go let them scrap sls and help spacex
I would agree that Elon Musk will not mount a crew mission to Mars in his lifetime, for all his claims. He would better concentrate his efforts on something that has a more realistic chance of succeeding or happening, whether in space or on Earth.
What about having an artificial magnetic field around the Starship itself. Starting from the Nose to the Skirt. That I think will solve the problem pose by Radiation
Using a solenoid
@@michaelabiodun6950 It could work, if you make it as big as Earth's
@@Martinit0 hmmm
Super great this video Marcus! Thanks
Thank you, Marcus! Your videos are full of information!
What nobody seems to be talking about is the failures trying to create a self sustaining micro eco system on Earth, Biosphere 1 and 2.. Both were a failure even given that they were not completely closed systems and were intended to support a handful of people. If we can't do it on Earth what in the world makes Elon, et al, think they can do it on Mars.
Absolutely, this is why dreams of Mars colonization will remain just that - dreams and nothing more. Elon Musk will only realize after that after spending so much of his and Space X’s money on something that is unrealistic and unattainable.
Thanks Marcus and crew for all the great work you are doing. It is much appreciated. One thing that occurred to me was that maybe SpaceX is thinking of using artificial gravity on the trips to Mars. In and interview a while ago Elon was asked if SpaceX had considered using centrifugal force to simulate gravity and his answer was 'yes'. This would be relatively easy to achieve by tethering two starships together by the nose with say a 1000 m tether and rotating at 1.3376 RPM. The coriolis force would be minimal and only be noticeable when moving from one level to another. Note also that SpaceX always intends to send ships to Mars in pairs, never singly.
Another great video, very informative. 👍👍
17:10 That's no bs. After Hurricane Maria, the area I was in lacked a lot of basic produce for a few months. All we really had access to was a few locally grown items and canned stuff. The morale and wellness boost from finally getting ahold of fresh fruits and vegetables was noticeable. Not a huge, but noticeable.
Great work! Thank you. Really got a lot out of it.
What a wonderful video filled with brilliant information……Marcus…you and your crew are offering such an amazing service for those of us who can see our future in space. This is definitely a video that needed to be made, and I’m sure I’m not the only one who feels that way. Thank you so much for educating us on these important issues awaiting those brave souls who will make those first journeys into the universe.
Well done! Keep up the enthusiasm! I would like to see more Mars habit and colony designs. I don’t thin’ SpaceX has gone as far as the Mars Society have in practical application, build and development.
You are gifted, sir! Other addressed the same issues but didn't work for them so well. Nor for us :) Please do continue on this path, although I must admit it's not easy at all!
WOW!!! Great video!!! Thank you Marcus and team!!
Well researched Marcus. A simple trip to mars is not so simple. I look forward to your weekly videos and this was a bonus. Thank you.
we have a lot of experience with a crew in confined small space for months and years -- sailing ships
Very informative. Well done!
Great coverage, Thanks!
That was very informative Marcus. You raised a number of issues I had no idea were issues. Thank you for another great post.
Superb video, Marcus.
Fabulous video Markus. Thank you.
Extra midweek video. Excellent!!!
Enjoy!
Great video Marcus. You always have top content.
I wish I could get a glimpse into the future and see what the detailed final manifest will be for the first supply shipments. It must be pretty crazy for the very ultimate trip!
Marcus, that was superb. Love your content.
Excellent Summary Marcus
great! love these deepdives Marcus
Excellent video! Very informative!
What a comprehensive assessment of the challenges of human travel to Mars! Excellent work! Mahalo from your friends in Hawai’i!
Excellent stuff bro
Fantastic video Marcus, great topic for a mid week video. Love it!
Thanks a ton!
Thank you soooo much! Each time, it is a blast!
I watch them while eating, and those are the best launch times ;) !!
Love the content, new subscriber. Keep up the awesome videos!!!
Thank you! Will do!
Love your work boyyy!!!
thanks for this interesting video, all very instructive
Great shows, thanks. You might also discuss the infrastructure needed on Mars and how solar city, boring, tesla, and his other ventures all will be needed on Mars. The master planner.
Always relevant and interesting. Thanks