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Why is Venus hell and Earth an Eden?

quantamagazine.org

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Re: Why is Venus hell and Earth an Eden?

#302
post #229

Earlier quoted context omitted.

Venus is room temperature with low radiation, if you dig in. Living on Venus was floating around as an easier alternative to living on the Mars surface. Room temperature is 21°C, I have no idea how many freedom fries units that is.

A shockingly useful "quick and dirty" estimate for C to F for temps humans are likely to encounter is 2x + 30. It's not precise at all, but for purposes of "what does that feel like outside" or "should I bring a sweater" it works pretty well. 21C would, by this estimate, be 72F. The true conversion is just shy of 70F, so, again, it's not correct but it's close enough for this kind of conversation.

I try to remember: 0 = freezing 10 = chilly 20 = comfy 30 = warm 40 = scorching.

Re: Why is Venus hell and Earth an Eden?

#303
post #229

Earlier quoted context omitted.

Venus is room temperature with low radiation, if you dig in. Living on Venus was floating around as an easier alternative to living on the Mars surface. Room temperature is 21°C, I have no idea how many freedom fries units that is.

The Fahrenheit scale is European, not American. It was created in Poland well before the United States broke off from Great Britain. We're just slow to change.

Maybe there is a reverse psychological angle to make the current US administration go metric. Fahrenheit->Polish->European->Communist/Woke. Can't have that!

Re: Why is Venus hell and Earth an Eden?

#305

Earlier quoted context omitted.

A shockingly useful "quick and dirty" estimate for C to F for temps humans are likely to encounter is 2x + 30. It's not precise at all, but for purposes of "what does that feel like outside" or "should I bring a sweater" it works pretty well. 21C would, by this estimate, be 72F. The true conversion is just shy of 70F, so, again, it's not correct but it's close enough for this kind of conversation.

I try to remember: 0 = freezing 10 = chilly 20 = comfy 30 = warm 40 = scorching.

30's hot, 20's pleasing, 10 is not, and 0's freezing.

Re: Why is Venus hell and Earth an Eden?

#306

Earlier quoted context omitted.

How do you deorbit Venus is such a way that your inflatable balloon city comes to a gentle stop, 30 miles up, and just floats there? Worse still, when people need to leave and return to Earth, how do you launch a rocket from the balloon city and return to orbit? How do visitors or pioneers deorbit and land at the floating city? If there aren't materials to effect a repair, how long until it sinks down into the hellzo…

Gonathan Goff wrote bunch on what you have to work with in terms of what you can extract from Venus's atmosphere. While metals would need to be imported if you're going to pick some place in outer space to live its hard to do much better. https://selenianboondocks.com/category/venus/page/2/

One fascinating idea I haven't heard talked about is, if we ever are able to make super-strong carbon composites, they could be used on Venus for passive floating dragnets to scrape raw materials from the surface. They could float just enough to drag the surface from one end and be carried along by winds from the other, and then be passively triggered to float back to the upper atmosphere to be harvested.

Thanks to the extreme bouyancy of Venus, a small amount of compressed air could passively lift much more than it would on Earth, making Venus's bouyancy a secret super power. And you could design nets with creative combinations of hooks, one-way valves and so on to gather a payload as it passively drags the surface. And seaweed-style distribution of compressed air capsules could make it fault-tolerant even if ripped into segments by the horrific winds of the middle atmosphere.

The temperature, torsion, and corrosion are as extreme as it gets, and it may not be realistic, and/or it may not be feasible to think such payloads could float through the hurricane force winds and be recoverable in any systematic way at higher altitudes. But it has a tantalizing feeling of "holy heck this bouyancy super power might be useful" in the event we had material strong enough to do it. That would give a hypothetical Venus settlement access to iron, magnesium, aluminum, calcium, some titanium, and bunches of silicon dioxide.

Re: Why is Venus hell and Earth an Eden?

#307

Earlier quoted context omitted.

Because it's cheaper to live on a f-ed up half-built construction site of a planet than it is to fight with entrenched interests on earth. Same reason North America got colonized by religious extremists and weirdos.

The free, abundant land choke full of natural resources was probably more important.

Only free if you discount the costs involved in carrying out genocide against the existing inhabitants. But your point stands, that cost was frequently born by the government, so from the perspective of individual settlers it was often free.

Re: Why is Venus hell and Earth an Eden?

#308

Earlier quoted context omitted.

>By launching your rocket from the ballon city and returning to orbit. (I'm struggling to see the novel problem.) I believe they are having trouble envisioning how you would launch rockets from a balloon city without disturbing the equilibrium of the balloon city because it is assumed that rockets thrusting down with great force would damage the balloon city in a way it would not easily recuperate from. I also find t…

> how you would launch rockets from a balloon city without disturbing the equilibrium of the balloon city because it is assumed that rocks thrusting down with great force would damage the balloon city in a way it would not easily recuperate from It's a floating platform. Same as the ones SpaceX lands its rockets on. Same as a gunboat firing projectiles. Will a launching rocket impart force to the platform? Yes. But u…

No need for a launch boat. Just light the fuse and eject it from your balloon. Think subsurface missle launch by an Ohio-class sub.

Re: Why is Venus hell and Earth an Eden?

#309
post #80

> Why Is Venus Hell and Earth an Eden? Because humans evolved on Earth and not on Venus. If we evolved on Venus then it would be our Eden. > They’ve been pushing their model Earth to its extremes Is your model anywhere good enough to be able to get useful outcomes from this process? I would suspect not. I mean, we know this planet's state is partially owed to the many unique comet impacts that have occurred during it…

> Because humans evolved on Earth and not on Venus. > If we evolved on Venus then it would be our Eden That's about the connotations of the words "Hell" and "Eden", not about the facts being discussed. And why did humans evolve on Earth but not Venus? In fact no life evolved on Venus that we know of.

I blame Jurassic Park for popularizing the adage "life finds a way". It's good so far as it goes as a celebration of the miraculous creativity of life. But taken to the extreme it means failing to respect pretty powerful physical limits that are devastating to any form of organic chemistry.

Re: Why is Venus hell and Earth an Eden?

#310

Earlier quoted context omitted.

I'm sure we can figure out stuff, but I guess my point is, why would we do that at all? How fucked up Earth needs to be than living on a floating oil platform above Venus is better? The point is already hard to make for the Moon or Mars.

It's less about the earth being uninhabitable and more about redundancy of species.

It would be one of the worst places. So, you are living over a floating habitat that the only way to get resources it's from out planet. Because, on the surface, the conditions are so hard that even remote mining is impossible.

It would be better the moon, Mars or even moving habits on Mercury. At least you have access to mineral resources, and water (ice).

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