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Posted: 10/23/2023 2:20:33 PM EDT
[#1]
Quote HistoryQuoted: Not true. Current technology could, in theory, build a superconducting ring around Mars that would be able to generate enough of a magnetic field to stop ablative loss from the solar wind. The largest hurdles are: 1. No one has built a superconductor 1000's of km's long and measured the losses(which should be zero) 2. Getting enough Bismuth/Yttrium and a few other minerals to Mars, depending on the type of SC used. 3. It's a planet sized project. A sufficiently large magnetic field isn't the biggest issue with terraforming Mars. Replenishing the atmosphere on any sort of human timescale is. Sounds expensive. Like really expensive. Like lets just make the planet we want from scratch expensive! |
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Posted: 10/23/2023 2:23:08 PM EDT
[#2]
Can 1/3 Earth's gravity contain enough O2 volume to sustain a breathable atmosphere?
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Posted: 10/23/2023 2:24:04 PM EDT
[#3]
Even if you solve the atmospheric problem , having only .38 of the gravity is going to wreak havoc on humans biologically. That , and that pesky -80° temp .
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Posted: 10/23/2023 2:24:49 PM EDT
[#4]
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Posted: 10/23/2023 2:26:06 PM EDT
[#5]
Quote HistoryQuoted: Exactly. No magnetosphere is something they cannot change and will always make terraforming Mars pointless. We just need to drill down to the core of Mars and start dropping magnets down the hole. Duh! |
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Posted: 10/23/2023 4:52:11 PM EDT
[#6]
Quote HistoryQuoted: Yeah, breathing pure oxygen on Mars would be like breathing 1/15th the amount of oxygen you get at the top of Everest. Quote HistoryQuoted: Quoted: The atmosphere is so thin that even if it was pure O2 you'd still probably die. I did a Google search on the altitude equivalence here on earth and it was something like 28km high. If true holy shit...  Yeah, breathing pure oxygen on Mars would be like breathing 1/15th the amount of oxygen you get at the top of Everest. You could use the bacteria to make o2 and concentrate it for use in a sealed habitat. |
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Posted: 10/23/2023 5:03:28 PM EDT
[#7]
Quote HistoryQuoted: Just need to drill into the core and set off a number of nuclear warheads to get the ol magnetic field spinning again. and where are we going to find a good supply of unobtanium? |
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Posted: 10/23/2023 5:05:28 PM EDT
[#8]
Quote HistoryQuoted: Even if you solve the atmospheric problem , having only .38 of the gravity is going to wreak havoc on humans biologically. That , and that pesky -80° temp . If we solve the magnetosphere, problem, warming it up with greenhouse gases and a giant magnifying glass in orbit will be child's play - duh. |
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Posted: 10/23/2023 5:16:56 PM EDT
[#9]
Quote HistoryQuoted: You didn't even read one of the responses did you? I read the OP and responded. Then I read other responses and saw that many others made the same point. So what? I don't get your anger. |
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Posted: 10/23/2023 5:37:04 PM EDT
[#10]
While I would take a new habitable planet, I wuld much rather have 3 tittied women. That would make everything better.
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Posted: 10/23/2023 7:51:26 PM EDT
[#11]
Quote HistoryQuoted: Exactly. No magnetosphere is something they cannot change and will always make terraforming Mars pointless. They estimate it would only retain its new atmosphere for 500,000 years. Hardly worth the effort /s |
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Posted: 10/23/2023 7:56:55 PM EDT
[#12]
Mars soil is poisonous too btw, forget that dumb Matt Damon movie. No amount of fertilizer is going to make martian soil useful at all. Reality sucks, scifi suckered us so bad.
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Posted: 10/23/2023 7:59:46 PM EDT
[#13]
Nothing will survive without the Van Halen belt.
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Posted: 10/23/2023 8:02:49 PM EDT
[#14]
Even if you replaced all of Mars' air with pure oxygen, the extremely low air pressure (less than 1% of Earth's) would mean it's still not breathable.
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Posted: 10/23/2023 8:05:46 PM EDT
[#15]
 David Bowie – Life On Mars? (Official Video) |
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Posted: 10/23/2023 8:06:18 PM EDT
[#16]
It seems like it would make much more sense to build underground on Mars to shield oneself from all that radiation. I think that's what they did on The Expanse until they gave up and started moving to planets through the gate system that were already alive.
Regardless, there isn't much on Mars except certain resources like iron. I often say that colonizing that planet is some thing of a red herring. It could be terraformed. But as others have pointed out. It would demand tremendous energy and resources. That can probably only be provided by the infrastructure of a Dyson Swarm to make it practical/cost efficient. |
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Posted: 10/23/2023 8:49:23 PM EDT
[#17]
Introducing a bacteria on a planet that is sterile of human existence sounds safe and effective.
What can go wrong? |
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Posted: 10/23/2023 8:52:01 PM EDT
[#18]
I think home girl is tripp'in.
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Posted: 10/23/2023 8:52:05 PM EDT
[#19]
Quote HistoryQuoted: Introducing a bacteria on a planet that is sterile of human existence sounds safe and effective. What can go wrong? I have eleventy trillion mouths and I must feed?  That said until we start editing the whole solar system I think Mars is going to be a very marginal place for any form of life. There just isn't much to work with there besides very toxic soil. |
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Posted: 10/23/2023 9:00:45 PM EDT
[#20]
One day frogs might stop bumping their asses if they grow wings.
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Posted: 10/23/2023 9:02:58 PM EDT
[#21]
Shake and bake colony?
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Posted: 10/23/2023 9:12:21 PM EDT
[#22]
That's nice but i think with the lack of magnetosphere any atmo they make with fancy biopaint will get stripped away faster than they can make it.
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Posted: 10/23/2023 9:14:15 PM EDT
[#23]
Quote HistoryQuoted: Exactly. No magnetosphere is something they cannot change and will always make terraforming Mars pointless. It has been posited that you could actually just stick a relatively small electromagnet in the lagrange point and it would do the job. |
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Posted: 10/23/2023 9:16:49 PM EDT
[#24]
Quote HistoryQuoted: The solar wind is a real bitch. Good luck with keeping your new atmosphere! If you want your atmosphere, you can have your atmosphere. |
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Posted: 10/23/2023 9:17:08 PM EDT
[#25]
Oxygen isn't the problem on Mars. Nitrogen is.
Mars has plenty of oxygen locked up in the soil. Not so much nitrogen. |
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Posted: 10/23/2023 9:25:09 PM EDT
[#26]
Quote HistoryQuoted: It seems like it would make much more sense to build underground on Mars to shield oneself from all that radiation. I think that's what they did on The Expanse until they gave up and started moving to planets through the gate system that were already alive. Regardless, there isn't much on Mars except certain resources like iron. I often say that colonizing that planet is some thing of a red herring. It could be terraformed. But as others have pointed out. It would demand tremendous energy and resources. That can probably only be provided by the infrastructure of a Dyson Swarm to make it practical/cost efficient. It would actually be easier to make floating colonies on venus. Upper atmo there is similar pressure and gravity to earth. Just have to deal with the corrosives. |
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Posted: 10/23/2023 9:36:01 PM EDT
[#27]
The temperature on Mars is -70 Fahrenheit.
Ain’t no one gonna be breathing in that air. |
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Posted: 10/23/2023 9:39:51 PM EDT
[#28]
The only time Mars will be remotely hospitable is when our sun starts fusing heavier elements and grows in size.
Even then it will be a relatively short window. It's too far from the sun after the sun stabilized and I don't think it has the core to sustain any kind of magnetic field/atmosphere we would consider livable. |
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Posted: 10/23/2023 9:45:13 PM EDT
[#29]
Quote HistoryQuoted: First post nails it unless they plan on bringing a butt load of magnets too. Somebody’s got to go back and get a shitload of magnets! |
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Posted: 10/23/2023 9:46:10 PM EDT
[#30]
Quote HistoryQuoted: Exactly. No magnetosphere is something they cannot change and will always make terraforming Mars pointless. They've already determined a satellite at one of the langargarian points can deflect the solar wind. |
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Posted: 10/23/2023 9:50:55 PM EDT
[#31]
Quote HistoryQuoted: I saw this movie I think. |
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Posted: 10/23/2023 9:54:47 PM EDT
[#32]
Fine , we're living on Mars, saving our poop to grow veggies with ....then one day we miss a resupply . We've already atrophied and become too weak from the .38 earth gravity . It'll be 2yrs before the next resupply. The end .
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Posted: 10/24/2023 12:22:29 AM EDT
[#33]
Quote HistoryQuoted: Can 1/3 Earth's gravity contain enough O2 volume to sustain a breathable atmosphere? It's a partial pressure problem for humans. The atmosphere must contain oxygen in high enough concentration at sufficient pressure for people's to breathe. Mars doesn't have enough gravity. I'm sticking with my plan to raise the orbit of Mars closer to the Sun so there's nearly a hint of sufficient heat on the planet. No crazier than the rest, and I'd have potential energy on my side. |
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Posted: 10/24/2023 12:24:09 AM EDT
[#34]
Quote HistoryQuoted: It's a partial pressure problem for humans. The atmosphere must contain oxygen in high enough concentration at sufficient pressure for people's to breathe. Mars doesn't have enough gravity. I'm sticking with my plan to raise the orbit if Mars closer to the Sun so there's nearly a hint of sufficient heat on the planet. No crazier than the rest, and I'd have potential energy on my side. What would you use to change the planet's orbit? |
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Posted: 10/24/2023 12:44:33 AM EDT
[#35]
I think mining and weaponizing the moon would be better .
* if we're gonna depopulate we need to start with China... |
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Posted: 10/24/2023 4:08:58 AM EDT
[#36]
Quote HistoryQuoted: only .38 of the gravity is going to wreak havoc on humans biologically. That is not known. It might be fine. This is something we should check out. Virtually all of our research is near 0g vs 1g. We have almost no fractional gravity human research, but the tiny amount we have from the lunar missions is actually quite promising. I suspect 0.38g is fine. The bigger question is can we do half that? A third? If so, we can do the Moon, Callisto, Titan, maybe Ganymede, living in habs/tunnels and we can survive on ships and stations with easier engineering spin gravity. A bunch of O'Neill Cylinders around large asteroids that we mine starts to give us many Earth's of living space without the truly unimaginably insane scale and timeframe of a Dyson Swarm. (Io and Europa are not doable due to Jovian radiation belts. Fuck floating around acidic windy Venus over a crushing hellscape... I'd rather live in a crater on one of Mercury's poles ) |
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Posted: 10/24/2023 7:23:44 AM EDT
[#37]
Quote HistoryQuoted: What would you use to change the planet's orbit? Quote HistoryQuoted: Quoted: It's a partial pressure problem for humans. The atmosphere must contain oxygen in high enough concentration at sufficient pressure for people's to breathe. Mars doesn't have enough gravity. I'm sticking with my plan to raise the orbit if Mars closer to the Sun so there's nearly a hint of sufficient heat on the planet. No crazier than the rest, and I'd have potential energy on my side. What would you use to change the planet's orbit? Details. |
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Posted: 10/24/2023 7:36:00 AM EDT
[#38]
Quote HistoryQuoted: So the answer to man made climate change is to change the climate on another planet? Interesting. |
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Posted: 10/24/2023 7:38:24 AM EDT
[#39]
Quote HistoryQuoted: -225 F every night Yeah, solar winds aside, best case isn't the cold gonna be a problem for the bacteria to grow and live for more than a day during the summer? |
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Posted: 10/24/2023 7:56:37 AM EDT
[#40]
Quote HistoryQuoted: That's nice but i think with the lack of magnetosphere any atmo they make with fancy biopaint will get stripped away faster than they can make it. https://www.nasa.gov/news-release/nasa-mission-reveals-speed-of-solar-wind-stripping-martian-atmosphere/ MAVEN measurements indicate that the solar wind strips away gas at a rate of about 100 grams (equivalent to roughly 1/4 pound) every second. “Like the theft of a few coins from a cash register every day, the loss becomes significant over time,” said Bruce Jakosky, MAVEN principal investigator at the University of Colorado, Boulder. “We’ve seen that the atmospheric erosion increases significantly during solar storms, so we think the loss rate was much higher billions of years ago when the sun was young and more active.” ----------------------- If you can make an atmosphere I'd think you could make an extra 100g/sec to make up for the solar wind losses, but I'm not an expert. A lot of things we do routinely today were believed impossible 150 years ago. |
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Posted: 10/24/2023 8:09:49 AM EDT
[#41]
Quote HistoryQuoted: The solar wind is a real bitch. Good luck with keeping your new atmosphere! Quote HistoryQuoted: The solar wind is a real bitch. Good luck with keeping your new atmosphere! Quoted: FPNI I thought the reason Mars lacked atmosphere & surface water was the lack of a magnetic core to divert the solar wind….. True. That article is likely from a "climate change scientist." |
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