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Chinese Space Official Seems Unimpressed With NASA's Lunar Gateway (arstechnica.com)

schwit1 shares a report from Behind The Black: At a science workshop in Europe this week, Chinese space officials made it clear that they found the concept of NASA Lunar Orbiting Platform-Gateway (LOP-G) to be unimpressive and uninteresting. Moreover, they said that while it appears we will be delaying our landings on the Moon for at least a decade because of LOP-G, they will be focused on getting and building a research station on the surface, right off the bat.

[From a report via Ars Technica:] "Overall, [Pei Zhaoyu, who is deputy director of the Lunar Exploration and Space Program Center of the China National Space Administration], does not appear to be a fan of NASA's plan to build a deep space gateway, formally known as the Lunar Orbital Platform-Gateway, at a near-rectilinear halo orbit. Whereas NASA will focus its activities on this gateway away from the Moon, Pei said China will focus on a 'lunar scientific research station.' Another slide from Pei offered some thoughts on the gateway concept, which NASA intends to build out during the 2020s, delaying a human landing on the Moon until the end of the decade at the earliest. Pei does not appear to be certain about the scientific objectives of such a station, and the deputy director concludes that, from a cost-benefit standpoint, the gateway would have 'lost cost-effectiveness.'"

53 of 97 comments (clear)

  1. Color me unimpressed with their opinion. by SeaFox · · Score: 1, Informative

    Their longest manned flight was only 21 hours.

    Call me when China puts people on the moon with 1960's rocket tech.

    1. Re:Color me unimpressed with their opinion. by Richard_at_work · · Score: 5, Informative

      Actually, their longest so far is 33 days, during the Shenzhou 11 mission in 2916.

      The mission you link to, Shenzhou 5, was their first crewed mission - they have orbited two space station since then, with multiple crewed missions.

    2. Re:Color me unimpressed with their opinion. by Richard_at_work · · Score: 4, Funny

      Of course, I spot the time travelling mistake the moment I hit "submit"...

    3. Re: Color me unimpressed with their opinion. by sg_oneill · · Score: 2

      You'll be waiting a long time if your e petting them to moon land using "1960s technology". They've got a noonlanding with modern tech to get out the way first.

      And don't deluded yourself. Whether the Americans , Russians or Chinese hit lunar soil first, the bulk of that ships gonna be Chinese tech anyway

      --
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    4. Re: Color me unimpressed with their opinion. by sg_oneill · · Score: 4, Funny

      Goddamn it iphone keyboard. Stop doing this to me

      --
      Excuse the Unicode crap in my posts. That's an apostrophe, and slashdot is busted.
    5. Re:Color me unimpressed with their opinion. by SeaFox · · Score: 1

      Actually, their longest so far is 33 days, during the Shenzhou 11 mission in 2016.

      The mission you link to, Shenzhou 5, was their first crewed mission - they have orbited two space station since then, with multiple crewed missions.

      Ah, thank you for the correction. I blame the poor organization of the general Chinese Space Program article on Wikipedia for not listing anything after 2007 in the section titled "History and recent developments" e_e

      But that doesn't change much when these Chinese missions are within the last five years, meanwhile we have Americans and Russians running space stations for over three decades and spending months in space at a time.

    6. Re:Color me unimpressed with their opinion. by angel'o'sphere · · Score: 2

      We are in the year 2018, why would they use 1960's rocket tech?

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    7. Re:Color me unimpressed with their opinion. by Anonymous Coward · · Score: 1

      Recycling incentives.

    8. Re: Color me unimpressed with their opinion. by SeaFox · · Score: 1

      You're post isn't filled with smart-quote gibberish, you're already ahead of most the iPhone posts I read.

    9. Re:Color me unimpressed with their opinion. by SeaFox · · Score: 1

      The point being we've done a hell of a lot more with less. They should hold their tongues because there is a (pardon the pun) world of difference between U.S. and Russian space exploration accomplishment and what they've achieved.

    10. Re: Color me unimpressed with their opinion. by cascadingstylesheet · · Score: 2

      And don't deluded yourself. Whether the Americans , Russians or Chinese hit lunar soil first, the bulk of that ships gonna be Chinese tech anyway

      If you mean "Chinese manufactured tech", sure.

    11. Re: Color me unimpressed with their opinion. by c6gunner · · Score: 3, Funny

      And don't deluded yourself. Whether the Americans , Russians or Chinese hit lunar soil first, the bulk of that ships gonna be Chinese tech anyway

      Funny, I didn't realise Boing, SoaceX, Lockheed Martin, etc. were Chinese companies. I guess they weren't satisfied with stealing western tech; now they're stealing western names too!

    12. Re: Color me unimpressed with their opinion. by c6gunner · · Score: 1

      That's true, but:

      1. You shouldn't underestimate them just based on that, and
      2. What they've accomplished so far has zero bearing on whether or not a lunar base makes more sense than an orbital station.

      I think the Chinese may very well be right as far as cost/benefit is concerned. The thing is, there are a lot of problems to work out with actually living on the moon, whereas space stations are to some degree a "solved problem" at this point ... and NASA is very risk averse these days. For what it's worth, this may be the best solution; NASA can work on an "orbital gateway" while China takes greater risks with a lunar base. We get the benefit of learning from their mistakes, while they get the benefit of having a transfer station close by.

    13. Re:Color me unimpressed with their opinion. by evanh · · Score: 5, Interesting

      There's a world of difference in materials and manufacturing now too. SpaceX has proven that the biggest budgets are no longer needed to enter space ... and, maybe more importantly, that action can be rapid if objectives don't keep changing every 8 years.

    14. Re:Color me unimpressed with their opinion. by K.+S.+Kyosuke · · Score: 1

      Actually, ORSC engines are NOT "1960's rocket tech" - at least for Americans that still haven't developed theirs.

      --
      Ezekiel 23:20
    15. Re: Color me unimpressed with their opinion. by Bing+Tsher+E · · Score: 2

      Goddamn it iphone keyboard. Stop doing this to me

      The bulk of that phone is Chinese tech.

    16. Re:Color me unimpressed with their opinion. by Parker+Lewis · · Score: 2

      The mistake was the typo or reveal to public they can time travel? Maybe this is the reason why they're unimpressed :D

    17. Re:Color me unimpressed with their opinion. by Anonymous Coward · · Score: 1

      Dear China,

      First you must learn to pull an oar, only then can you take the helm.

      Sincerely,
      The decadent civilizations that you shamelessly steal technology from.

    18. Re: Color me unimpressed with their opinion. by gnick · · Score: 1

      I KNEW there was a reason the US needed Space Force!

      --
      He's getting rather old, but he's a good mouse.
    19. Re:Color me unimpressed with their opinion. by Anonymous Coward · · Score: 2, Informative

      BE-4 is ORSC, but the US has always been more interested in making their engines reliable first and high performance second. The NK33, while impressive, ultimately didn't beat the gas generator F-1's to the moon did they? And how exactly is the YF100 impressive as a first stage engine? The SSME is 2 decades older and has higher ISP at sea level than the YF100 has in vacuum all while having double the thrust and being reusable, is oxidizer rich really intrinsically better? ORSC is also old news, the cool new stuff is full flow staged combustion like the Raptor. That and liquid methane seems to be the way of the future.

    20. Re:Color me unimpressed with their opinion. by AHuxley · · Score: 3, Interesting

      It works. The design can be sold, imported and used. The skilled people at a factory can read and understand the list of materials needed.
      Generations of skilled workers with decades of "working" with the needed materials can understand the design and work flow.
      The steps for any advanced industrial nation is not a generation of skills beyond their industrial education.

      Once a nation gets dependant on another nation for its science, that other nation can say no more.
      China found that out with its early nuclear design work with the Soviet Union. China had to work around when the Soviet Union stopped its support.
      The UK found that with its early space work and its Skynet project https://en.wikipedia.org/wiki/.... The UK was forced to buy into an all US rocket system.
      Trying to import new tech from a nation that then says no is not a good policy with the cost of space projects.

      --
      Domestic spying is now "Benign Information Gathering"
    21. Re:Color me unimpressed with their opinion. by AHuxley · · Score: 1

      They will be stopped due to limits like the Missile Technology Control Regime https://en.wikipedia.org/wiki/...

      --
      Domestic spying is now "Benign Information Gathering"
    22. Re:Color me unimpressed with their opinion. by quenda · · Score: 1

      We are in the year 2018, why would they use 1960's rocket tech?

      It works for the Russians.
      https://en.wikipedia.org/wiki/...

      Though sadly, the 60's tech Proton has recently ceased production, and is being replaced with the Angara.

    23. Re: Color me unimpressed with their opinion. by narcc · · Score: 1

      It's the "heavy petting" analog to "cyber sex". e-petting sounds better than 'cyber making-out'.

    24. Re:Color me unimpressed with their opinion. by K.+S.+Kyosuke · · Score: 1
      The point is, it's not "1960s rocket tech" what the Chinese are developing.

      BE-4 is ORSC, but the US has always been more interested in making their engines reliable first and high performance second.

      Why not have both, like with the RD-180?

      The SSME is 2 decades older and has higher ISP at sea level than the YF100 has in vacuum all while having double the thrust and being reusable, is oxidizer rich really intrinsically better?

      It doesn't really work that well for hydrocarbons. Either ORSC, or, as you note, FFSC is the way to go.

      --
      Ezekiel 23:20
    25. Re:Color me unimpressed with their opinion. by K.+S.+Kyosuke · · Score: 1

      No Arab country is mentioned as being a signatory to the MTCR.

      --
      Ezekiel 23:20
    26. Re: Color me unimpressed with their opinion. by painandgreed · · Score: 1

      And don't deluded yourself. Whether the Americans , Russians or Chinese hit lunar soil first, the bulk of that ships gonna be Chinese tech anyway

      If you mean "Chinese manufactured tech", sure.

      More likely Korean, Japanese, and Taiwanese manufactured tech assembled in a Chinese manufactured case in China.

  2. Well... by Anonymous Coward · · Score: 1

    ...they're kinda right, the LOP-G is just ISS in orbit around the moon, the real action is on and below the surface. NASA are looking at the Moon as simply a fuel station for their headlong rush to Mars, which, when you think about it, is simply a larger version of the moon wrapped in a toxic atmosphere of CO2. The Moon is the first stepping stone. We learn how to live there, we can live just about anywhere.

    To pochuye ke inyalowda?

    1. Re: Well... by Anonymous Coward · · Score: 1

      Not really, but somewhat.
      Living on Mars is harder in some ways: deeper gravity well, less sunlight, dust storms, atmosphere that's thick enough to be annoying but mostly too thin to be useful, remoteness of another magnitude.

    2. Re: Well... by Immerman · · Score: 1

      >in situ resource utilization gets you water and CH4 propellant

      Also food and oxygen, which are rather important. And 90+% of the raw materials to grow biomass, which is going to be one of the most important things for creating a viable colony. And not just for creating a sustainable ecosystem, but also for construction materials - cellulose is really a rather incredible material. Two of the more exotic (and not super difficult to make) forms are nanocellulose, which is easily worked, translucent, gas impermeable, and has a tensile strength comparable to aluminum, and "superwood" which is stronger than steel. Nanocellulose can be produced with just heat and mechanical processing - with no unpleasant chemicals introduced into your composting stream. Superwood requires an acid bath, which is potentially more challenging, but then it just needs heat and compression. I imagine something fast growing like bamboo would be extremely useful feed stock for such processes.

      --
      --- Most topics have many sides worth arguing, allow me to take one opposite you.
    3. Re: Well... by Immerman · · Score: 2

      Hmm, my post seems to have self-destructed. To summarize:

      Less sunlight, but days the almost same length as Earths. Solar panels are already lighter and cheaper than the batteries to support an off-grid system on Earth. 2.3x as many panels, to compensate for the dimmer sunlight on Mars, is going to be radically lighter and cheaper than the 29.5x as many batteries needed for the longer nights on the Moon.

      Dust storms would pose a problem though, since the most extreme ones can block out 99% of the sun at their worst. Some sort of back up power would be needed for those, but for most of them just doubling or quadrupling the amount of solar panels would compensate, and provide a huge surplus of power under normal circumstances. An the plus side, the low density of the air means that even the most ferocious Martian winds have less force behind them than a light breeze here, so visibility is really the only problem.

      The atmosphere is plenty thick enough to be useful though - we've already developed prototype drones capable of flying on Mars, and a nigh-unlimited source of nearly-pure CO2 is an incredible resource source for producing air, food, and construction materials using little more than a greenhouse. I'm a big fan of low-tech solutions in space colonies - far less to go wrong.

      --
      --- Most topics have many sides worth arguing, allow me to take one opposite you.
    4. Re: Well... by AlwinBarni · · Score: 1

      Not really, but somewhat. Living on Mars is harder in some ways: deeper gravity well, less sunlight, dust storms, atmosphere that's thick enough to be annoying but mostly too thin to be useful, remoteness of another magnitude.

      Yes and no, just considering the surface it's better to be on Mars: easier production of oxygen and methane, more interesting science, higher gravity (there are no studies done on this, so hard to say, but better Mars then Moon with regard to gravity), lack of crispy sharp lunar dust, thin but still useful atmosphere, which besides mentioned oxygen and fuel might be used to blow or for green houses (after pressurization).

  3. The U.S. is losing its space dominance by Anonymous Coward · · Score: 1, Insightful

    The U.S. Congress and NASA are dragged down by boondoggling and political favoritism, instead of focusing on putting men on the Moon. By the time the Lunar Gateway is finished the Chinese will be walking on the Moon and broadcasting their feats in Digital 4K UHD for all the world to see. This will be a huge blow to western morale and people will openly question our democratic system.

    1. Re:The U.S. is losing its space dominance by White+Yeti · · Score: 1

      Yep, but the US political-scientific cycle is pretty short. I think you could reasonably replace "Chinese" with "NASA" and "Pei" with "NASA scientists" in the summary.

    2. Re:The U.S. is losing its space dominance by Impy+the+Impiuos+Imp · · Score: 1

      Each new president cancel's the previous one's NASA initiatives. This frees up money, but more importantly, obviates the risk of having to stand there like Nixon praising Kennedy's moonshot initiative.

      --
      (-1: Post disagrees with my already-settled worldview) is not a valid mod option.
    3. Re:The U.S. is losing its space dominance by ahodgson · · Score: 1

      Why? The US went to the moon almost 50 years ago. There's nothing there. NASA cancelled the last planned missions because there was no point. Our democratic system would rather spend money on welfare and war than pointless grandstanding.

      If we were serious about space we'd be building real habitats in geosync, and we'd capture a small near-earth asteroid so we could start learning how to mine and fab new structures in space with materials that didn't have to be launched from Earth. You get a couple hundred people living and working in orbit for a decade, and then you can talk about living on the Moon or Mars.

    4. Re:The U.S. is losing its space dominance by schnell · · Score: 2

      This frees up money, but more importantly, obviates the risk of having to stand there like Nixon praising Kennedy's moonshot initiative.

      Whatever else Richard M. Nixon may have screwed up, his name and signature are on a plaque that will rest of the moon for (presumably) millions of years. Not Kennedy's. I'd say that's pretty sweet revenge.

      --
      "95% of all Slashdot .sig quotes are incorrect or completely fabricated." -Benjamin Franklin
  4. Re:Chinese promises by amalcolm · · Score: 1

    Yes, keep telling yourself that. Doesn't make it and more true

    --
    Time for bed, said Zebedee - boing
  5. Re:Finally, no clothes for emperor. by beheaderaswp · · Score: 1

    I'm not much of a China fan..

    Anything which doesn't put "boots or bots on the ground" is superfluous unless absolutely needed for transit.

    --
    Another consultant who stuck it out.

    "We are the Priests, of the Temples of Syrinx..."
  6. What is the point of a lunar gateway? by Immerman · · Score: 1

    I have to agree - I really don't even seen the point of a lunar gateway at all, at least not before there's a thriving lunar outpost getting lots of traffic. Exactly what value does a lunar space station offer? If there's a lunar outpost producing fuel or whatever, then yeah, an orbital station starts to be useful, you don't want to have to land to refuel for an interplanetary flight. But before then?

    It's not going to help with building a lunar outpost - there's precious little to be gained by stopping in orbit on your way to/from the surface. At most you might want a refueling depot for the trip home, or just a BFR tanker ship. But even that's probably overkill - getting to the moon is the hard part, the return trip is almost all down hill.

    A space station isn't that great for surveying - satellites are far superior and far cheaper. And there's no point in keeping supplies in orbit when they're only useful on the ground. And microgravity research doesn't care what it's orbiting, and the ISS has that covered. So what's a lunar gateway for?

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    --- Most topics have many sides worth arguing, allow me to take one opposite you.
    1. Re:What is the point of a lunar gateway? by BlueStrat · · Score: 1

      I have to agree - I really don't even seen the point of a lunar gateway at all, at least not before there's a thriving lunar outpost getting lots of traffic. Exactly what value does a lunar space station offer? If there's a lunar outpost producing fuel or whatever, then yeah, an orbital station starts to be useful, you don't want to have to land to refuel for an interplanetary flight. But before then?

      It's not going to help with building a lunar outpost - there's precious little to be gained by stopping in orbit on your way to/from the surface. At most you might want a refueling depot for the trip home, or just a BFR tanker ship. But even that's probably overkill - getting to the moon is the hard part, the return trip is almost all down hill.

      A space station isn't that great for surveying - satellites are far superior and far cheaper. And there's no point in keeping supplies in orbit when they're only useful on the ground. And microgravity research doesn't care what it's orbiting, and the ISS has that covered. So what's a lunar gateway for?

      Came here to say essentially the same thing.

      It;s like discovering a brand new unexplored continent and the first step taken to explore this new land is to build a giant Amazon transshipment center offshore decades before anyone is thinking of living there even temporarily .

      This is risk-averse NASA setting 'safe' goals intended mainly to keep the major established aerospace/defense firms in lucrative contracts. All other goals are secondary at best.

      Strat

      --
      Progressivism (aka US 'Liberalism'): Ideas so good they need a police/surveillance-state to enforce.
    2. Re: What is the point of a lunar gateway? by c6gunner · · Score: 1

      It's not going to help with building a lunar outpost - there's precious little to be gained by stopping in orbit on your way to/from the surface. At most you might want a refueling depot for the trip home, or just a BFR tanker ship.

      That's essentially the idea. NASA doesn't want it as a gateway to the moon, they want it to serve as a gateway to the rest of the solar system. It wouldn't provide much benefit to a lunar colony other than possibly being able to launch quick rescue missions if needed.

    3. Re: What is the point of a lunar gateway? by Immerman · · Score: 1

      That's even worse - why would you willingly trap yourself in the Moon's gravitational well if you're planning to leave on an interplanetary voyage? The moon makes a great gravitational slingshot, but you have to slow down considerably to enter orbit, and once you're in orbit you can't use it as a slingshot anymore.

      The only reason to stop at a space station would be to refuel, and you can do that just as easily in a high Earth orbit.

      --
      --- Most topics have many sides worth arguing, allow me to take one opposite you.
  7. Re:Finally, no clothes for emperor. by WindBourne · · Score: 1

    i am not a fan of the CHinese gov either.
    However, I think that China has this right and that LOP-G is another boondoggle and is a huge waste of our money.

    --
    I prefer the "u" in honour as it seems to be missing these days.
  8. It’s time to privatize our manned space prog by Applehu+Akbar · · Score: 1

    NASA has to be excessively cautious in planning any manned program because of the political fallout they get after any accident. JFK was canny in making Apollo a quasi-military Cold War effort within which it was possible to take elevated levels of risk. Washington would be totally unable to repeat anything like this in today's political climate.

    If we want a lunar base we will have to call in a certain South African entrepreneur or whichever commercial competitor can take the risks necessary do the job.

  9. Re:It is unimpressive by hyades1 · · Score: 1

    They are also the best way to develop the expertise to get all of our eggs out of one celestial basket.

    So no, manned space programs are not obsolete.

    --
    I've calculated my velocity with such exquisite precision that I have no idea where I am.
  10. Re:Finally, no clothes for emperor. by Immerman · · Score: 1

    You've got to wonder what the motive is. I mean sure, the SLS is a boondoggle in progress with existing contracts (aka pork flow) that would have to be cut off. And in fairness, it's not actually obsolete until the BFR proves itself - SpaceX has done incredible things, but that's no guarantee of future successes.

      But a "lunar gateway"? A lunar outpost would create at least as much pork, and actually involve doing something useful while they were at it. We've already got a space station, building another one around the moon doesn't seem to serve any purpose whatsoever.

    --
    --- Most topics have many sides worth arguing, allow me to take one opposite you.
  11. Re:It’s time to privatize our manned space p by Immerman · · Score: 1

    Where's the profit? That's always the downfall of privatization. Lots of demand for launch services, so it's not surprising we have several private enterprises developing launch capability. But a lunar outpost? That's going to cost billions, and there'll probably be no return on investment whatsoever for decades - not until there's enough space activity to fuel demand for lots of raw materials in orbit, and enough industrial capability is established on the moon to provide it.

    Plus there's not really much guarantee that there will be any first-mover advantage - the first attempts are going to be extremely dangerous and expensive, and nothing stops the next guy from poaching some of your experts and leapfrogging your capability once the path forward becomes clear.

    --
    --- Most topics have many sides worth arguing, allow me to take one opposite you.
  12. Re:It is unimpressive by Immerman · · Score: 1

    Unfortunately you need the vision to care about the our species separate from yourself for that to matter. All the space colonies in the world won't do a damned thing for Earth, except offer inspiration and a route for a tiny percentage of the the best and brightest to jump ship.

    Though I suppose if you consider yourself to be among the best and brightest, and think you can avoid being decrepit and useless by the time such colonies are established, then maybe you might imagine you'd benefit.

    Heck, I'm hopeful that there'll be a demand for smart, hardworking old folks in the early years - it seems reasonable to assume most manual work will be done by telepresence robots anyway (what can't be automated completely), while the operators are safe inside, but close enough to eliminate light speed lag. So it shouldn't much matter how strong you are. And there's value in people with wisdom and experience under their belt - especially if they've already accepted their remaining life will be short, and don't mind shortening it further by being on the front lines of space colonization. Heck, a dismaying number of people die shortly after retiring - the sense of purpose in helping to build a dream might actually extend your life beyond what it would be in a safe and pointless retirement on Earth.

    --
    --- Most topics have many sides worth arguing, allow me to take one opposite you.
  13. They are Right to be Unimpressed by Slicker · · Score: 2

    In the United States, we are bogged down by scientists at the expense of engineers. Even too many of our engineers are acting like scientists--telling of why we can't do this or that. If they were acting like engineers, they'd be focused on how we can. Scientists are necessarily skeptical, by profession. Engineers need heed the findings of scientists but remain optimistic, regardless. An engineer will work with what is known and around what is not to achieve objectives. The more time an engineer has, the better the solution he/she can derive.

    There is plenty to criticize China's space program on but they are right that a lunar orbiter does nothing toward establishment of a lunar station. It can be helpful in testing of methods for mining asteroids, as proposed. It is great for miscellaneous NASA science projects. But overall, it's a financial sinkhole..

    On the other hand, the Moon is also going to be a financial sinkhole in most ways. There are very few resources for survival on the Moon, much less exploitable profit. Perhaps, helium 3 if we can develop nuclear reactors for it. That is something China claims to be after. The costs of a Moon base are going to be difficult to justify. The regolith is extremely abrasive, quickly tearing through fabrics in space suites. The lack of dust makes working in the light/dark but no grey in between very difficult. And there is very scant water ice.. There is really nothing on the Moon that could assist man's movement farther into space.

    In contrast, is very rich in water and other resources like CO2, nitrogen, argon, and many easily accessible metals. Kilometers deep fresh water glaciers strip just north and south of the equatorial region. The regolith is soft--not abrasive. There is both wind and solar power available. You can easily make oxygen, work outside, collect iron, nickel, and various other metal ores. You can make methane or pvc plastics (CO2, water, and salts in the regolith). And the salts in the regolith of both plentiful and oxygen rich, useful for welding, explosives, or rocket fuel. Start with an inflatable habitat, cover it with regolith. Then melt out a castle in the kilometers deep glacier below..

    The Moon holds the advantage of being close, so we can provide assistance when necessary. Mars is far but assistance is far less likely to be necessary. The Moon will require everything continuously resupplied. Mars only needs a foothold but resupply of various technologies could be good business. For example, sending rockets into orbit from Mars with various materials would be far easier than from Earth -- metals, plastics, water, even food.

       

  14. Re:200 Years from now by Immerman · · Score: 2

    That's one of the biggest draws to a Mars or Moon colony - all the radiation shielding you could want is just lying around on the surface, you just have to scoop it up and pour it over your habitat. Or dig down into it. Or maybe get lucky and find some old lava tubes that you just have to make airtight.

    The Moon is small and close enough that a colony, once it's reached sustainability, could start exporting fuel and radiation shielding to orbit for a tiny fraction of the cost to get it from Earth.

    Meanwhile, there's no particular need for serious radiation shielding in short-range ships, nor for propulsion in long range ships on regular transportation routes such as between Earth and Mars. Thanks to the "Interplanetary Transport Network" (essentially gravitational slingshot navigation) once you're in space you can get pretty much anywhere in the solar system while spending almost no energy - just a little bit of navigation thrust to fine-tune your path. Find a small, resource-rich asteroid, and start mining it while nudging it into a Mars Cycler orbit. Turn the mining tunnels into habitats behind you, and use short-range ships to get from it to either planet when you're passing by. Even something relatively tiny, like 1km across could contain a truly huge amount of space - 300 times the size of Disneyland with generous 5m ceilings, and without gravity there's no difference between walls, floors, and ceilings, so the useful space would actually be quite a bit larger than that.

    --
    --- Most topics have many sides worth arguing, allow me to take one opposite you.
  15. Re:It’s time to privatize our manned space p by Applehu+Akbar · · Score: 1

    Nobody thought there was a large market for launch services either, until the private sector came in and slashed cost below the wildest expectations of economists, as competition tends to do in every line of business. Each lowering of the price level has caused new demand to magically appear.

  16. Re:Finally, no clothes for emperor. by soc_cost_priv_gains · · Score: 1

    The purpose of LOP-G is to give SLS a reason to exist. Remember this is the "rocket to nowhere" we are talking about. In my opinion LOP-G can be built with the Falcon Heavy.