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Questions tagged [terraforming]

For questions about the process of turning a barren space (such as a planet, moon, or asteroid) into a habitable one.

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Sun-like star system with less water close to the frost line

Normally in sun-like planetary systems, there are small rocky planets around the habitable zone or closer and gas giants beyond the frost line. Typically these gas giants later migrate inwards due to ...
Ben's user avatar
  • 113
6 votes
4 answers
246 views

Colonizing a frozen Waterworld

So in my fictional scenario a civilization has to leave their home planet. Having no possibility to travel close to light speed, their best bet is the neighboring system which includes an ice world ...
Ben's user avatar
  • 113
5 votes
6 answers
3k views

How could Venus be partially terraformed?

In my setting, Venus is still very much still hostile to a normal human without equipment, but isn't hot enough to melt lead and has a relatively low pressure compared to now. How could this ...
user8796978's user avatar
0 votes
2 answers
94 views

Plausible Martian Underground Colony

I'm looking for scientifically plausible zones for pioneer colonies on Mars. I will have them living underground for radiation shielding, water sourcing, and geothermal for energy, so somewhere with ...
CS Simpson's user avatar
3 votes
3 answers
563 views

How could an alien race convert an Oxygen-Nitrogen atmosphere into a Methane one?

For a story I'm working on, humanity meets an alien race of aggressive methane breathers, whose technology is as much biological as it is mechanical. When they locate a suitable planet for ...
Hewholooksskyward's user avatar
-1 votes
2 answers
119 views

What could go wrong as a consequence of terraforming a planet? [closed]

For my money, human beings manage to do very few things, especially really big life-altering things, without there being "unintended consequences". What could be some of the unintended ...
onewordtest's user avatar
12 votes
8 answers
4k views

What would a glassed planet really look like?

While the Halo franchise has used it a lot, other franchises have also mentioned/threatened with the idea of glassing a planet. The sheer heat of the attacks used on the planet to make it ...
Demigan's user avatar
  • 45.4k
5 votes
4 answers
895 views

Large-Scale Biospheres on Mars

I've been researching the idea of spreading out vast sheets of aerogel across regions of Mars. This would theoretically have the effect of both warming whatever land is under the sheet - thus melting ...
ajderxsen's user avatar
  • 121
10 votes
6 answers
2k views

How could a civilization artificially green large portions of the Sahara in a way that doesn't cause an ecological catastrophe in the Amazon?

Apologies if I sound like a madman ahead of time. Me and a friend have been worldbuilding this alternate timeline for awhile now, and I've recently become interested in the idea of one of the factions ...
Dorothy Vivian's user avatar
8 votes
4 answers
1k views

Assuming other variables are good, could earth plants survive the light intensity on the surface of Mercury?

I am trying to imagine a terraformed solar system in the late 3rd millennium to early 4th millennium AD. As a result, I am curious if plants on this Mercury, which would have all the oxygen, CO2, soil ...
Michael Ley's user avatar
0 votes
1 answer
216 views

If you Broke Mars' Perclorates and Benzenes How Much of an Atmosphere Would this Create?

Much of Mars is inimical to human life. While there are many problems I would like to focus on three: The low density atmosphere does not provide the pressure needed to sustain humans outside of a ...
Englishman Bob's user avatar
-2 votes
1 answer
69 views

Flooding space tunnels to trap some characters! [closed]

Humans have terraformed another planet; part of how they have done so involves utilizing (and building new) caves and tunnels (could be lava tubes, or could be another planet which has something ...
E. Delaney's user avatar
4 votes
2 answers
238 views

How to increase Jupiter’s reflectivity?

The idea of turning Jupiter into a sun to terraform the Galilean moons is a popular one. This concept goes by the alluring name of “stellification,” but has a few important drawbacks when prodded with ...
user98816's user avatar
  • 8,605
2 votes
2 answers
251 views

How would a fantasy civilization terraform Mars-like planets using magic?

Backstory The fantasy civilization in question was stolen from this other question: Which of these space colonizing civilizations has the advantage in a conflict It is a civilization with Roman/...
Galaxy's user avatar
  • 1,173
1 vote
1 answer
186 views

If Titan was suddenly raised to an earth-like temperature, how long before it melts?

After terraforming Mars, humans are now attempting to terraform Saturn’s moon Titan. Having removed much of its dense atmosphere, (reducing the pressure to just 0.7 bars) the colonists have now built ...
user98816's user avatar
  • 8,605
0 votes
4 answers
248 views

Would it make more sense to terraform a planet with a single climate or multiple varieties of climate?

A human civilization in my story has terraformed hundreds, possibly thousands of planets across their galaxy to support life. They have done this by changing the atmospheres, adding minerals into the ...
Kal Madda's user avatar
  • 1,851
3 votes
2 answers
1k views

Could all of human population fit in China, India, and Mongolia?

I have a scenario where Aliens must escape their Star system because a star 5 light years away from them is going nova soon. They find humanity and learn all about them in a few years - our whole ...
Mishima's user avatar
  • 1,009
2 votes
1 answer
103 views

Methods of releasing nitrogen from martian regolith

One important step in the proposed terraforming Mars would be to give the planet a nitrogen atmosphere. Now, most assume that nitrogen, (along with water and other luxuries of the sort) would have to ...
user98816's user avatar
  • 8,605
0 votes
1 answer
92 views

Would it be possible to alter the chemical composition of a planet’s atmosphere for humans? [closed]

If my civilization (composed of humans who have extremely advanced technology such as portal engines (which can create traversable wormholes from one end) is terraforming worlds and creating colonies ...
Kal Madda's user avatar
  • 1,851
2 votes
6 answers
2k views

Would it be possible to alter the gravitational field of a planet to one more suitable for human habitation?

I know low gravity can have negative effects on humans, and I would guess high gravity would also have negative effects. So would it be possible to increase or decrease a plant’s gravity to better ...
Kal Madda's user avatar
  • 1,851
11 votes
4 answers
4k views

How would a future humanity "terraform" the moon?

Let's say, hypothetically (perhaps in the setting of a book series), Earth is temporarily destroyed. Antimatter weapons have been used in self-defense during a violent conflict. Now, thousands of ...
ScholarMoth's user avatar
6 votes
4 answers
719 views

How long is a terraformed mars likely to remain habitable without plate tectonics?

Whilst considering the terraforming Mars in my science fiction project, I realised something rather important: Mars has no plate tectonics. That means that, assuming the humans in my project manage to ...
user98816's user avatar
  • 8,605
3 votes
1 answer
119 views

Critical animal species for temperate rainforest climate

On my terraformed exoplanet, the largest habitable land masses are primarily covered with temperate rainforests (average temperatures from 8 to 18 C) Assume for this question that the bottom of the ...
DMacc1917's user avatar
  • 956
2 votes
2 answers
425 views

What changes would be expected of Earth plants on a low-light planet?

I've read about plants on worlds orbiting red dwarfs potentially having black leaves due to the higher infrared radiation, but what kind of changes would be expected of plants on a planet like Mars ...
DMacc1917's user avatar
  • 956
2 votes
2 answers
149 views

Plausible evolutionary changes for fauna on a terraformed planet?

My planet is a tidally locked rocky planet (90% Earth surface gravity) orbiting an M-type star. This M-type star orbits a G-type star at roughly 1.5AU. This means that it has a kind of day/night cycle ...
DMacc1917's user avatar
  • 956
-4 votes
1 answer
78 views

Thermoelectric-powered electromagnets to render Mars habitable

The answers to my latest question on restarting Mars core have finally convinced me; I have abandoned the concept of doing so. However, whilst morosely browsing other questions on giving Mars a ...
user98816's user avatar
  • 8,605
1 vote
3 answers
163 views

Melting Mars’ core with heliobeams

Humans are trying to terraform Mars. The first step is to restart the magnetosphere. To do this, (and any naysayers who think that a magnetic dipole satellite is better can kindly not say so) a swarm ...
user98816's user avatar
  • 8,605
0 votes
3 answers
189 views

Increasing venus’ rotation using radiation pressure

I know, I know; I said I was giving up on Venusian terraformation, but this is gonna haunt me for the rest of my days if I don’t come up with some way to render this planet habitable. So, back to the ...
user98816's user avatar
  • 8,605
1 vote
3 answers
160 views

Speeding up venus with rocks from mercury

I’ve decided that in terraforming venus, the time taken to speed up its rotation by venting the atmosphere is just too much. So, I’ve returned to the idea of bombarding the planet with something ...
user98816's user avatar
  • 8,605
3 votes
4 answers
118 views

How to keep a giant shell around venus rotating normally

So, let’s face it, terraforming Venus is a bust. There’s simply no good way to do it without speeding up its rotation, which demands huge quantiles of energy. Any civilisation that could produce this ...
user98816's user avatar
  • 8,605
1 vote
1 answer
134 views

Time taken to spin venus with mass drivers

So, returning (once more) to the prospect of the terraformation of Venus, I have finally come up with a method of spinning this rock to something approaching 24 hours which (cross fingers) might work ...
user98816's user avatar
  • 8,605
4 votes
6 answers
1k views

Ways to speed up venus’ rotation without an asteroid strike [duplicate]

So, a fairly high-tech civilisation is looking to terraform Venus. This will first involve accelerating its rotation from 243 days to 24 hours, in order to cool it down and strengthen the ...
user98816's user avatar
  • 8,605
3 votes
3 answers
437 views

Creating a second earth: the problem with stars

(Continues along the premise of this question: Creating a second earth: How to make a continent?) So, thanks to their helpful team of ask forum buddies, 😉 the terraformers designing New Earth have ...
user98816's user avatar
  • 8,605
0 votes
0 answers
138 views

I’m trying to imagine an Earth-like planet around Barnard’s star

What I have established about this planet is that it is the size of Earth but it is located 2.2 AU from Barnard’s star, a red dwarf. I’m trying to figure out how much greenhouse gases are needed to ...
Fredrik Hansing's user avatar
0 votes
3 answers
166 views

Using solar sails to accelerate a planet’s rotation [closed]

So, just pondering on methods of terraforming venus, it seems that the first step regardless of what comes is to speed up its rotation. This will strengthen its magnetic field, not to mention cool off ...
user98816's user avatar
  • 8,605
1 vote
2 answers
201 views

Converting mars’ atmosphere to water

So, I have come to the decision that there is no one easy way to bring water to Mars. So, in light of that, i have decided on several methods which will be used simultaneously, and which I hope will ...
user98816's user avatar
  • 8,605
-2 votes
3 answers
169 views

How much of Mars is covered if 10 quadrillion tonnes of water fall on it?

The setting: In trying to terraform Mars quickly, I am imagining that Phobos, (the bigger of its two moons) holds ten-quadrillion tonnes of water ice beneath its stony regolith. I am further supposing ...
user98816's user avatar
  • 8,605
5 votes
3 answers
1k views

What would happen if Olympus mons erupted?

The Tharsis range is a quartet of immense volcanoes on Mars, one of which, Olympus Mons, is largest in the solar system. It is so vast that it cannot be seen from the surface; should you stand it’s ...
user98816's user avatar
  • 8,605
5 votes
1 answer
700 views

How long would it take to recreate the biosphere on a “dead Earth” planet?

So, one of my main settings involves humanity colonizing an Earth-like planet. The planet has all the abiotic features needed to support mankind (oxygen-nitrogen atmosphere, magnetic field, 70% ...
Jordy the Cat's user avatar
8 votes
7 answers
5k views

How can I deliver 4 x10^19 kg of hydrogen to a planet in 30 years?

So, in the early years of interstellar colonisation, a planet called Uwa Ohuru starts to be terraformed. Uwa Ohuru is a Venus-like planet with a thick co2 atmosphere, (though not so thick that this ...
user98816's user avatar
  • 8,605
8 votes
8 answers
2k views

What would the easiest planet to terraform look like?

With terraforming, how to do it and how long it takes depends largely on the planet in question. Worlds such as Venus may be nigh-impossible to terraform, whereas worlds more similar to prebiotic ...
user98816's user avatar
  • 8,605
6 votes
2 answers
349 views

Effects of Superconducting Rings to create a magnetic field around a planet

Continuing along my oft-contineud series of questions relating to terraforming, I return to an idea of giving Mars a magnetic field which I had hitherto dismissed. The idea is that a huge ...
user98816's user avatar
  • 8,605
3 votes
3 answers
408 views

Best materials to build a worldhouse roof

In an imagined sci-fi universe where immense space habitats and constructs are common (however, nothing reaching nearly the size of a Niven Ring) one of the many forms are worldhouses: planets ...
user98816's user avatar
  • 8,605
5 votes
2 answers
602 views

Biology of a dyson-tree

The concept of a dyson tree is a genetically engineered plant that can exist in vacuum conditions, and uses the raw materials found in extraterrestrial regolith (I.e. comets, asteroids etc) to produce ...
user98816's user avatar
  • 8,605
1 vote
2 answers
336 views

Using "smart" bio-machine fungus to terraform a planet?

Backstory Ok let's start from the top. A kardashev type 1.2 civilization (a humanity maybe a couple decades to a century ahead of us) builds the beginnings of a dyson swarm, suddenly having unlimited ...
Sam Kitsune's user avatar
  • 1,994
5 votes
2 answers
295 views

How eccentric can a planet’s orbit be before it is uninhabitable?

So, I am writing a list of criteria for wannabe terraformers so that they know at what point any of their pet projects can be considered truly habitable. This list covers everything from the necessary ...
user98816's user avatar
  • 8,605
2 votes
4 answers
190 views

Fastest way to give mars oceans [closed]

So, in light of my previous question: how long would it take to bring water to Mars?, assuming that humans have established a magnetic field and atmosphere thus far, what it the fastest way to then ...
user98816's user avatar
  • 8,605
13 votes
17 answers
3k views

Why do pantropy (genetically modified humans) and terraforming both exist?

I am trying to increase the diversity of beings in this sci-if futuristic project, and am considering the use of pantropy to do so. Pantropy means genetically altering humans to inhabit unfamiliar ...
user98816's user avatar
  • 8,605
3 votes
1 answer
483 views

How much time would take for Venus to generate a Magnetic Field?

Supposing that we managed to speed up Venus's rotation to a 24 hour cycle in just under 40 years (how we managed to do that is irrelevant here), how much time would take for Venus to form a magnetic ...
Cruell's user avatar
  • 147
1 vote
3 answers
200 views

Introducing animals to a terraforming Mars by air-drop

So, the moment has arrived: Mars is habitable. Plants, fungi, and even insects have been introduced by air-drop, along with fish and crustaceans introduced as eggs. However, what larger animals could ...
user98816's user avatar
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