311
Moon cave discovered that could one day house humans
(www.bbc.com)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 15 Jul 2024
311 points (98.4% liked)
World News
39013 readers
894 users here now
A community for discussing events around the World
Rules:
-
Rule 1: posts have the following requirements:
- Post news articles only
- Video links are NOT articles and will be removed.
- Title must match the article headline
- Not United States Internal News
- Recent (Past 30 Days)
- Screenshots/links to other social media sites (Twitter/X/Facebook/Youtube/reddit, etc.) are explicitly forbidden, as are link shorteners.
-
Rule 2: Do not copy the entire article into your post. The key points in 1-2 paragraphs is allowed (even encouraged!), but large segments of articles posted in the body will result in the post being removed. If you have to stop and think "Is this fair use?", it probably isn't. Archive links, especially the ones created on link submission, are absolutely allowed but those that avoid paywalls are not.
-
Rule 3: Opinions articles, or Articles based on misinformation/propaganda may be removed. Sources that have a Low or Very Low factual reporting rating or MBFC Credibility Rating may be removed.
-
Rule 4: Posts or comments that are homophobic, transphobic, racist, sexist, anti-religious, or ableist will be removed. “Ironic” prejudice is just prejudiced.
-
Posts and comments must abide by the lemmy.world terms of service UPDATED AS OF 10/19
-
Rule 5: Keep it civil. It's OK to say the subject of an article is behaving like a (pejorative, pejorative). It's NOT OK to say another USER is (pejorative). Strong language is fine, just not directed at other members. Engage in good-faith and with respect! This includes accusing another user of being a bot or paid actor. Trolling is uncivil and is grounds for removal and/or a community ban.
Similarly, if you see posts along these lines, do not engage. Report them, block them, and live a happier life than they do. We see too many slapfights that boil down to "Mom! He's bugging me!" and "I'm not touching you!" Going forward, slapfights will result in removed comments and temp bans to cool off.
-
Rule 6: Memes, spam, other low effort posting, reposts, misinformation, advocating violence, off-topic, trolling, offensive, regarding the moderators or meta in content may be removed at any time.
-
Rule 7: We didn't USED to need a rule about how many posts one could make in a day, then someone posted NINETEEN articles in a single day. Not comments, FULL ARTICLES. If you're posting more than say, 10 or so, consider going outside and touching grass. We reserve the right to limit over-posting so a single user does not dominate the front page.
We ask that the users report any comment or post that violate the rules, to use critical thinking when reading, posting or commenting. Users that post off-topic spam, advocate violence, have multiple comments or posts removed, weaponize reports or violate the code of conduct will be banned.
All posts and comments will be reviewed on a case-by-case basis. This means that some content that violates the rules may be allowed, while other content that does not violate the rules may be removed. The moderators retain the right to remove any content and ban users.
Lemmy World Partners
News !news@lemmy.world
Politics !politics@lemmy.world
World Politics !globalpolitics@lemmy.world
Recommendations
For Firefox users, there is media bias / propaganda / fact check plugin.
https://addons.mozilla.org/en-US/firefox/addon/media-bias-fact-check/
- Consider including the article’s mediabiasfactcheck.com/ link
founded 1 year ago
MODERATORS
Seems excessively very deep to me - someone’s going to have to build a freight elevator as tall as a soccer field is long. Even worse, I’d expect you’d want your airlock on the surface so you’re not struggling to maneuver in a bulky suit just to get outside: now you’re talking about a 100m pressurized elevator.
Does anyone know how deep you’d ideally want? I’m sure NASA has studied it. I do remember reading that 1’ is the exact wrong number because of indirect radiation. While you get more protection from radiation and a more stable temp, the deeper you go, the marginal value probably drops off pretty quickly, plus the inconvenience would quickly climb. When people online talked about living underground on the moon, I always imagined like 5-10m
Edit: here’s an argument to keep it less than 12m deep
Edit2: and here’s an argument for at least 1-2m
I would design the elevator car to be self-contained, rather than pressurizing the entire shaft.
Actually, it would be more like riding in a pressurized moon rover. Then, using wheels or rollers on opposing sides of a track to act as guides, some kind of hoist, or maybe just a linear inductive motor using the track as a stator plate.
The advantage to the linear induction motor is simplicity- if you’re building the track/guides out of metal any way, then, it’s just a few more components and you have a way to go up, go down, and brake.
In any case there’s really no reason to have a pressurized shaft.
The value of the cave is it’s already there, with no need to excavate that incredibly annoying moon dust. Which, to be clear, is a horribly hazardous material.
Because there’s little to no natural erosion, it’s sharp and splintery and highly barbed. It’s also magnetic, so it sticks to anything made of iron or steel; and for example probably causes something akin to silicosis.
It’s basically the reason that NASA and others are looking at pressurized rovers with suit ports for hopping out instead of an airlock and space suit design. It significantly resizes the amount of moon dust coming in.
Yes, the moon dust. That incredibly abrasive moon dust. Getting into the workings of the elevator that is your only way out of a deep hole. Any any repair work complicated by having todo it in a suit, in a vacuum, in the moondust, at whatever height it finally broke down
Even rabbits are smart enough to build 2 exits in their tunnels if they're of any size at all. The weather also isn't a big deal, so a track that's been cleaned, and doesn't have moon dust dragged onto it, shouldn't need cleaning every other week.
Remember, there's not a lot of gravity on the moon, the energy to get in and out of that hole isn't the same as on Earth. You could probably create a tether that could be ridden up and down.
See the link on my first edit. Even in the Moon’s low gravity, a fall over 12m is potentially fatal. It would be foolish to live such that astronauts take this extra risk every day.
You also have to get all your stuff down there in one piece. Sure, more ropes, but tons of equipment, huge sections of living quarters and airlock, construction vehicles, etc. then every supply run needs to get tons of supplies all the way down there. You could do it, but it seems like giving yourself a lot of unnecessary work, taking up way too much time. And of course any sort of cave-in makes any survivors completely unreachable