Terraforming Venus

What would be the best way to terraform Venus? Would it be possible to somehow dump most of the atmosphere into space?

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Yes that would be possible in the future, given enough energy to sustain a space fountain.

en.wikipedia.org/wiki/Space_fountain

Why just dump it into space though, you could ship it to mars with slow light sail drone ships and solve the issue of Nitrogen lack on Mars.

No need to dump atmosphere , make it work to your favor . 30 to 40 miles above the ground the atmosphere is almost identical to earth .

Is there even a practical way to remove a planet's atmosphere without massive structure damage?
That's a lot of mass there.

bombard it with comets and seed it with airborne cyanobacteria
The comets would increase the water content of the atmosphere, helping the cyanobacteria to live and creating white clouds above the sulfur cloud layer and increasing venus' albedo
the cyanobacteria meanwhile would metabolize the greenhouse gases and replace them with O2

>implying that bombarding it with comets would supply enough hydrogen A̲N̲D̲ cool it down enough for the products of the bacteria to not just be converted back into CO2

I'm talking about an ongoing project of probably tens of thousands of years, growing cyanobacteria in orbital farms and releasing it in to the atmosphere constantly, and constantly bombarding it with comets.
Nobody said terraforming is easy

bombard it with a huge fucking asteroid that blows almost all the surface away
wait a couple of hundred years for venus to cool down (you can put a giant sunscreen between the sun and venus to accelerate the proces), after temperature is acceptable, remove sunscreen gently
do what said basically but also with other genetically ingeneered bacteria that can metabolize and bind Sulfur, filtering it out of the atmosphere
wait a while
enjoy venus

or you could fly several huge asteroids (really fucking huge) very close by and let their gravity drain venus' atmosphere

or you could live in sky cities, floating in the thick atmosphere

>venus has too much atmosphere, needs less
>mars has too little, needs more

we should let mars fly by venus and drain it of its atmosphere

just takes a coulple of millenia and incredible amounts of energy, no biggy

Pffft! You only have to give it a magnetic field, make it spin faster, siphon off some of its atmosphere, and introduce a shitton of hydrogen and nitrogen into its atmosphere! No biggie. It would be a snap to terraform! It's practically earth-like already!

>venus atmosphere

Not a big as a problem as it's lack of magnetosphere and very slow rotation

Why don't we just take Venus' armosphere and move it to Mars?

No. Terraforming Venus is hard even with godly amounts of power. It's a lot easier to warm Mars up than cool Venus.

permanently terraforming mars is impossible, it's too small.
The only way to use it would be to use it as a core, move it out to the asteroid belt and have it snowball up a bunch of extra mass
in a few million years you'd have a planet that's large enough to hold an atmosphere

posted a whole thread about this sh** only a few hours ago

>tidal locked
>dense amtosphere
>close to the sun
>barren

By the time you can fix that shithole you'd be building dyson spheres around black holes.
I guess it might be practical for some demi-god elementary school project on planetary molding...

You need to find a way too cool the planet and keep it cooled. If the air temperature is reduced significantly. Then a lot of the gases will rain down and stay as a liquid or solid. Reducing air pressure.

Maybe move a large asteroid into a largrange orbit between Venus and the sun. So it blocks some of the solar energy.

then you have the problem that the day is longer than the year. The crust is really thin and unstable. Volcanoes are erupting constantly. No magnetosphere.

>volcanoes
Isn't it dead?

No. Venus is geologically too active.

the atmosphere is kept hot and thick by the volcanoes. Otherwise the lack of magnetosphere would have let it been blown away by now.

Venus is almost earth sized. So it is still hot and liquid inside.

There are not tectonics that we know of. Though the thin crust likes to break off into flakes. Which then slide around, under, and over each other.

If you want to get it as close to earth as possible it would take at least a few thousand years

To get the temperature and pressure down to earth levels you would need to build a sunsheild in Venus L1, this would need a diameter 4 times that of Venus itself. Then it would take between 25-100 years for the carbon dioxide in the atmosphere to freeze completely. You would then have a planet with about kilometer of carbon dioxide ice under an atmoshpere three times denser than earths of pure nitrogen.

Next step would be to sequester this ice somewhere, this technically would be fairly simple, it would just necessitate thousands of huge machines going round clearing up an entire planet for a few decades/centuries.

To reduce the venusian day from 116days and 18 hours down to 24 hours, you would need to capture 100 days of the suns total output and put it into rotating venus without just turning it into a ball of molten rock, that much energy would vaporise venus if it wasnt applied over thousands of years. but at the end you could take away half of the solar sheild 1300W/m. This requires the permanently maintained solar sheild 2 times the diameter of venus.
Keep the solar sheild and use it to beam power to a 24hour orbiting satellite which puts out 170 petawatts. this requires a permanently maintained solar sheild 4 times the diameter of venus and a 24hour orbiting satellite as well as some form of artifical magnetosphere

Then bombard it with the contents of a couple thousand ice comets for water, split some of the water into hydrogen and oxygen, creating O2, hydrocarbons, ammonia etc to sequester more than 2/3rds of the remaining nitrogen atmosphere.

Every other plan Isaw while researching this neccessitated the complete destruction of the inner solar system and the asteroid belt to generate the power required or required waiting millions of years for venus to cool down from hitting it with millions of comets.

or, just build a bunch of O'neil cylinders around Earth, Mars, Jupiter, and Saturn.

Would take a lot less time, energy, and resources.

Mars is easier to terraform. Though it isn't sustainable long term. since it lack of gravity.

i never said that it was a good idea doing this, only that it is the easiest way to get venus anything like the earth.

I saw something about using floating atmosphere processors to break apart the CO2 and spit out carbon pellets and oxygen, but it turns out that if you reduce the atmospheric pressure by any significant amount with that method, you end up with a few kilometers of carbon blanketing the surface.

So, you then have a near-total black surface, absorbing horrific amounts of energy from the Sun, and a frighteningly high oxygen content atmosphere. Congratulations, you've turned a boiling sulfur hellscape into a boiling carbon hellscape, where almost everything combusts instantly and with great efficiency.

>He fell for the cloud city meme
There's more to habitability than tempature and pressure. You still have the wind and atmosphere to deal with. Venus colonization is a pipe dream. The best you could realistically get is a high altitude research base or two. A future equivalent of Antarctica.

>terraform
>anything

Back to with you.

I don't think its anywhere near as bad as you suggest
High speed winds are something that structures can easily deal with.

Also means an anchored habitat would have unlimited wind power.

All you need to terraform Venus is a large carboniferous chondrite asteroid (4 billion tons with a composition of at least 10% carbon), a way to move it to the Venus-Sun L1 point, equipment to mine the asteroid and turn the material into a thin carbon-fiber sheet (3 grams/ square meter), and time. Eventually, the planet will cool below the triple point of carbon dioxide. And now that Venus is too cold for an atmosphere, the CO2 can be launched into space with mass drivers powered by an array of solar-powered satellites. This can also increase the rotation rate of the planet

Watch me and take notes.

The Sun will be too hot for Earth to support life in 1 billion years. Nothing is permanently terraformed. Your argument is pointless.

>Eventually, the planet will cool below the triple point of carbon dioxide.
Yeah, maybe in a few million years. Venus reflects most sunlight even now. Its heat is almost all latent. Blocking the Sun wouldn't do much.