It's not missing technology that kills the (pretty silly) idea of "Mars colonization" - it's missing ecology.
They can't even maintain functioning civilization in Antarctica... yet they "dream" of doing so in a place that's hundreds of times more hostile to human life.
One of the things standing in the way of an"civilization" on Antarctica is that it's illegal to build a civilization on Antarctica. We could absolutely do it, assuming we were willing to fight a war and the resources were worth it
That’s a good point. There is at least as much to learn from Antarctica as from Mars. Maybe less maybe more, but certainly more relevant since it’s on Earth. Plus easier to get to than Mars. Yet we can’t scrounge up enough to keep a larger presence there.
Sometimes I can’t shake the feeling that we are living in another dark age. We need a real renaissance to shake it.
i mean shoot, mars is actually kinda worse than the moon in some ways. Like, the worst of both worlds except 'worlds' pertains to 'celestial bodies in general'. You have the same ultrafine toxic razor sharp dust that gets everywhere, sticks to everything, and destroys mechanical joints on contact, but on MARS it gets blown around by dust storms that blot out the entire sky sometimes for months or years on end, whereas on the moon it only redistributes and resettles due to electrostatic repulsion (due to solar radiation).
Mars' atmosphere is just thick enough to be a hassle for creating risk of burning up on reentry but still too thin to reliably drag-brake so you end up having to thread a much more annoying needle with respect to approach velocity, whereas on the moon it's just straight up active thrust descent every time you're landing.
In both cases, living on the surface is a sucker's game and the only viable option would be to tunnel down beneath into the regolith where a sufficient rock barrier will block enough of the solar and cosmic radiation to not drastically shorten your lifespan.
Furthermore the energy cost to get a payload from earth to mars is LITERALLY ASTRONOMICAL whereas escaping the moon's relatively weak gravity well to reach almost anywhere else in the solar system (including mars) is dwarfed by the oomph it takes to climb out of the earth's gravity well in the first place alone.
I'd go so far as to say that a mars colony would never be viable until and unless we have a viable lunar colony
but make no mistake, a lunar colony is mandatory if we ever want to explore the rest of the solar system or not have all our eggs in one basket as a species. the moon is practically MADE OF the infrastructure we'll need across the entire solar system,some assembly required. The amount of Aluminum and Silver waiting for us in that silicate regolith will be instrumental, especially because smelting and building up there will be drastically cheaper than manufacturing shit down here and then having to carry it ALL THE WAY UP ALL OVER AGAIN.
and like, that isn't even factoring sending any of what's produced back to earth, because even that might be a waste of effort when everything we could ever BUILD outside our gravity well is worth more being up there just by virtue of the fact that we didn't have to pay through the nose to SEND IT.
Do not colonize other planets. They suck. They have all the downsides of space habitats (needing sealed environment, etc), while also adding more (breaches now let in toxic dust instead of vacuum, cannot control gravity via spin, etc).
Just build O'Neil cylinders. If you can't do that, maybe work on stabilizing the ecosystem we evolved to live in. Nowhere will ever be better than here, folks.
If it’s a Jack O’Neil cylinder, I will consider your proposal.
It works like a regular O’Neil cylinder, but cooler somehow.
Lol
The whole concept behind colonizing a planet is to be able to exploit the resources.
Which you cannot do with an O'Neal Cylinder. Since you have to manufacture it yourself.
All the more reason to send billionaires there.
Is anyone really thinking we just need to reach Mars, then immediately set up a colony? No, reaching there is obviously only a first step, but once we can reach it, we can try things to see if we can live there. For myself, I’ve been saying we need to hurry up and reach Mars because we have like 100 years of work before we can establish a colony so let’s get started
I don't disagree that having a self sustaining population of humans somewhere other than earth will be an important milestone.
But a much more pressing milestone is a the first self sufficient population, which I don't see mars supporting
I think the far-more realistic scenario is we create a colony of robots, first for experiments, then (if possible) to build out a colony that can eventually be inhabited by humans.
Is someone actually proposing that we're simply going to dump would-be colonists on Mars with a shovel and some O2 tanks then wave goodbye? Like, no shit we still need to work things out but that just means it's unknown, not impossible.
This book seems unnecessarily pessimistic. I don't know why I would spend money on doomscrolling, Kindle Edition.
Plugging our ears and going “NYAAAAAA” isn’t going to help. We need pragmatists to ask hard questions to cover all the bases, and force us to anticipate problems. Being aware of potentially fatal issues isn’t “doomscrolling”.
The authors aren’t saying that we should never, ever try to colonize Mars. They’re only saying that there are a LOT of questions to answer before we try.
Which is why you don't hear NASA going "yep we're good to go! No scientifically obtained issues to worry about!" Also sometimes you have to answer the questions through physical experimentation, which is why we send science teams before we send spacecraft full of colonists.
Books like this fall under the same grouping as those who hate Elon Musk so much that they have to also think space travel is dumb/bad as well because they can't remove the douchebag from the field his company operates in.
Space colonization is the future, it doesn't matter if it's ten years or a thousand. We are going to leave this planet. Case closed. The earth will not sustain us forever even in our wildest renewable energy/living fantasies.
Did we even read the same article?
A City on Mars ends with a kind of call to action. The point is that we have a tiny space station, and we have the potential to build a lot of experimental facilities on Earth where we can investigate some of the practical problems. Let’s get the biology and engineering right before we send people to Mars.
The authors aren’t against colonization. They’re against hasty, uninformed, reckless attempts.
The point of books like this is to underline areas where we're still woefully ignorant to guide future study. This isn't just complaining. It's taking stock of what we still need to learn.
You don't think all the scientists and engineers working around the world on this problem aren't aware of the potentially fatal issues? The last thing they want is to be the reason people die in space.
Elon Musk talks a lot of shit, but the actual scientists are busy considering the real problems, dangers, and solutions to getting to and colonizing Mars.
You don’t think all the scientists and engineers working around the world on this problem aren’t aware of the potentially fatal issues?
Scientists catalog what we know and don't know and try to chip away at the list of things we don't know. The whole point of the book and this article is that there is way more stuff we don't know than we realize and most discussion of space colonization tends to forget the parts we don't know.
The article even pointed out some very showstopping issues:
No one has been conceived in low gravity, no fetuses have developed in low gravity, so we simply don’t know if there is a problem. Astronauts experience bone and muscle loss and no one knows how that plays out long term
I was shocked to learn that no one really knows how to construct a long-term habitable settlement for either the Moon or Mars. Yes, there are lots of hand-wavy ideas about lava tubes and regolith shielding. But the details are just… not there.
For instance, supposedly space will end scarcity… and yet, any habitat in space will naturally have only a single source of food, water, and, even more urgent, oxygen, creating (perhaps artificial) scarcity.
Space colonization may happen, but it's incredibly doubtful that it'll happen in our lifetimes.
Yeah, there's a lot we don't know and a lot we haven't figured out yet. And it's definitely a tough nut to crack. But concluding from that, that is impossible is dumb. Everything is impossible until somebody goes and does it.
That was a very interesting read. I've always been a bit skeptical of people who say we'll be living in space or colonizing other planets in the near future. I definitely want to read their book.
Also, this made me laugh:
And do you really want to create a group of hungry, disgruntled miners that are also able to sling very large rocks at the Earth?
That said, slinging large rocks back to Earth is the only way I can see them returning whatever they mine and that doesn't sound like a great plan either.
For instance, supposedly space will end scarcity… and yet, any habitat in space will naturally have only a single source of food, water, and, even more urgent, oxygen, creating (perhaps artificial) scarcity.
Huh? Sure, if we forget absolutely everything we ever knew about reliability engineering.
Take air, for instance. If you're considering a community on the scale of a town or city, expect that it will be naturally divided into smaller physical units, corresponding to smaller social units in the community. Rather than having one big air supply for the whole "town" — which can fail or be sabotaged, creating an existential risk for the whole community — it'd likely be much safer to have small air systems for each household, neighborhood, commune, or other unit. You probably have to have them anyway for emergencies.
Infrastructure for distributing the air once it gets to the settlement is one thing. At least for now, though, Earth is the only place to get oxygen in life-sustaining quantities, which is the single source they're talking about.
Maybe you can posit harvesting oxygen from mineral oxides, hydrolyzing water if you can find it, or capturing an ice asteroid. Whether you split every atom of oxygen you breathe out of rust or lift them out of earth's gravity, let alone doing both for redundancy, it's orders of magnitude more energy and complexity than growing potatoes in Antarctica.
At least for now, though, Earth is the only place to get oxygen in life-sustaining quantities, which is the single source they’re talking about.
If we're talking about space colonization then "at least for now" doesn't apply any more.
There are vast quantities of oxygen available everywhere in the solar system. Extracting it is really not hard. There's a technology demonstrator generating oxygen on Mars right now. If you're arguing against space colonization because you're assuming that every bit of resources the space colony uses will have to be sent there from Earth, you're completely missing the basic concept of space colonization.
No fetuses have gestated in low gravity. That sounds like something we could do animal trials on.
But wow, getting a live sheep into space, and fed, and exercised, and cleaned, all for months… that alone is a big undertaking. Just to get a single data point that’s about another species.
I don't wanna go to Mars
What kind of brainwashed idiot does
It's all a lab rat life in jars
They branded the dream of ages
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