Questions tagged [habitability]

For questions asking about the conditions which are required for the development of life as we know it.

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2answers
316 views

Binary Stars with planets in P-Type orbits

For a gas giant to have a habitable Earth-like moon, in a P-type circumbinary orbit with the stellar classes of the 2 stars being A7 type III and F2 type IV separated by a distance of 2AU to 3AU, what ...
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669 views

Is it possible for life to exist on the core of a gas planet?

I was thinking of writing a story and had the idea of having a society exist on the core of a gas planet. The core would be similar to earth with a breathable atmosphere similar to ours above it but ...
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How long would it take for the effects of a nuclear weapon to wear off?

I would like to know how long it would take for the plant life in an area to recover from an explosion from a nuclear bomb exploding. Parameters for questions: The bomb is a 100 megaton nuclear ...
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3answers
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Is it possible to have a non tidally locked moon?

Fo my question, I'd like the moon to orbit around a saturn-like planet without rings. This moon would be located at a million kilometers away the host planet. the moon's size would be about 12 000 ...
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1answer
284 views

Habitable planet around a binary brown and white dwarf system

Brown and white dwarf stars are thought to have habitable zones but are very close orbits. Plus these planets will experience strong tidal forces and be tidally locked. But if you have a large Earth,...
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2answers
606 views

Is this habitable moon possible?

I've already asked a similar question but i'd like more details. This moon would be orbiting around a saturn like planet without rings. The host planet would be located in the habitable zone, ...
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4answers
387 views

Is a 1:1 Earth possible in a binary system?

I'm trying to build as close to a 1:1 Earth as possible, but finding information on a non-jovian moon-based planet is extremely hard to find. I tend to ramble trying to explain things in a non-list ...
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3answers
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Making a planet habitable for humanoids: The planet

The question: What characteristics are necessary for a planet to be habitable for humans? What should the generic star and planet be like? The life forms are human, so they Need to have access to ...
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1answer
1k views

Making a planet habitable for humanoids: The star

The question: What characteristics are necessary for a planet to be habitable for humans? What should the generic star and planet be like? The life forms are human, so they Need to have access to ...
8
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2answers
173 views

What can temporarily disrupt Earth's magnetosphere?

I'm trying to find some type of space weather or other natural occurrences that would result in the intensity of Earth's magnetic field dropping for a few hours to maybe a week or two at most. ...
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4answers
558 views

How long would it take a region to geologically settle down after a major cataclysm?

So in my story/world I have a region that is straight up destroyed...demonic magic is nasty stuff. So we have rings Ring 1 (1 is in the middle) This ring has a diameter of about 200 miles. At this ...
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1answer
343 views

Please help me calculate acceptable planet sizes & eclipse shadows cast by my binary planet system

I've been reading here for a little while, but this is my first question. I am trying to come up with either a concrete set of numbers for a single answer for a binary planet system, or a simple ...
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Could humans colonize this planet?

Star A Mass: 1.2 x Sol Radius: 1.157 x Sol Luminosity: 2.074 x Sol Temperature: 6,444 K Star B Mass: 0.63 x Sol Radius 0.691 x Sol Luminosity: 0.158 x Sol Temperature: 4,378 K Semi-Major ...
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4answers
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How would a neutron star affect the habitability of planets orbiting a companion star?

A star system consisting of two stars forms, with one being more massive. As such, the larger star soon exhausts its fuel and ends up as a neutron star. The secondary star has a semi-major axis of 700 ...
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1answer
180 views

Is it possible for a planet to become moon of a gas giant and sustain life as is? [duplicate]

I intend to base my story on a habitable earth-like planet, which faces major apocalypse that forces it to be a moon of super jupiter and tidally locks itself. If this is to happen, how would it be ...
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3answers
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How long after a global nuclear disaster would the world become habitable by humans again?

So at some point in the future, humans have small colonies on the Moon, on Mars and many space stations in orbit of all the planets in the solar system. Everything is going great until one day ...
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1answer
436 views

How much mass does a human need to live a satisfying life?

Humans evolved in ancestral environments as semimigratory omnivores, which has embedded several things into our instinctive sense of wellness, aka "all is alright with the world", among them a ...
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128 views

What factors might create a habitable tidally locked desert planet around a G-type star? [closed]

This planet doesn't have to be habitable/comfortable for humans, however it must be able to possess limited surface water, so that it is habitable for carbon based life, the planet should occupy an ...
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3answers
251 views

Planet Tidally-Locked to its star having eclipse day/night cycles?

I'm thinking of a planet with one side too hot, and one too cold due to always facing its star. With the planet having a small ring, a "twilight zone" which may be habitable, I was wondering if a moon ...
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1answer
200 views

Could life develop in this ternary sytem?

Here is a link to an online animation of stars' movements in a trinary system. Basically, the three stars are orbiting around a barycenter; one (yellow in the animation, mass = 1) closer to it and ...
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4answers
914 views

What is the habitable zone around my star?

I have built a star that is loosely based on a real-world star. It has the following properties: Spectral class G Mass: 1.03 M$_\odot$ Radius: 1.02 r$_\odot$ Luminosity: 1.05 L$_\odot$ Surface ...
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1answer
473 views

Conditions for human life in a Jupiter-like system

I was wondering about a setting where a moon orbiting a gas giant can sustain human life on its surface, i.e. with nearly identical conditions compared to Earth (e.g. size, gravity, mean temperature, ...
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1answer
319 views

Could life exist in a circumstellar disk?

I could have sworn that there was a question that covered this, but I suppose I'm misremembering. If anyone finds one, let me know. Back in the early days of the Solar System, things were pretty bad. ...
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2answers
204 views

Solitary celestial body with support for humanoid life

Suppose that a god has created a universe with nothing in it, except for a single, solitary celestial body. For simplicity, I'll call it a planet, although it most probably technically won't be. For ...
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5answers
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How could humans survive in extremely high gravity?

By extremely high gravity, I specifically mean around 28 Gs. I recently asked this question with regards to inhabiting the sun, and surviving in the sun's gravity seems like one of the major ...
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6answers
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Can a situation exist where there is one pole that is hot and another cold on a planet?

I am trying to design a world where one pole is very cold, and the other is very hot. I don't mean that there would be instant death in either, but it is colder than our South Pole on one end and ...
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2answers
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Can reptiles live a long time in a fake habitat? [closed]

I was thinking that animals in zoo's have better lives but shorter live expectancies. Does this mean that if any creature lives in a concentrated habitat live short lives?
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4answers
401 views

How would year length affect habitability of a planet?

Given a planet in the habitable zone and able to produce life what would be the effect of a short year? For example NASA recently found 7 exoplanets with Trappist-1 d being in the habitable zone but ...
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4answers
498 views

Can this unique planet be colonized?

In the story I'm writing, a gas dwarf (named Eden) is discovered in a triple star system. Its atmosphere is mainly oxygen and water based, and its gravity is slightly higher than Earth's. Unlike our ...
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8answers
5k views

Extremely small planet to live on

In the mobile game "The Path To Luma", the main hero travels to very tiny planets. Let's not think about where is the sun and how we leap through such small planets. What I want to ask is, if there is ...
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2answers
474 views

Could plasma be a building block for life?

I'm talking about ionized gas not the plasma in our blood. I have been reading science articles about plasma and they keep hinting at the idea of plasma based life. Here is my first example and an ...
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4answers
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Is it possible that a gas giant of similar size to Jupiter could harbor life?

Say we had a planet which was a gas giant. Is it possible that at the core of the planet where meteors, asteroids, and comet debris had collected that there could be a layer of atmosphere similar to ...
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3answers
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Can I build on and live on an island size tortoise?

What I am asking is not if there is an possibility of an island (Isle of Wight size because it is an island I am familiar with) size tortoise , I will find a way around that, I just want to know if a ...
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4answers
162 views

Resources to possess, and restrict in asteroid belt

Assume 100 years from now we have established sustainable bases on Mars, to the point where a colony ship making the trip to Mars is not "breaking news" anymore. There are a few reasons to begin to ...
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4answers
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Could we still live if Earth's spin speed slowed down by 90%?

I am working on a project (The Longest Day), and I'm sure some people here have the necessary knowledge to give me some more usefull info. OK, here it is: Lets say that Earth's spinning speed ...
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3answers
519 views

Could a planet with no satellites and no tectonic plates be habitable? [closed]

If there was an earth-like planet in the habitable zone, without tectonic plates or a satellite what would its characteristics be like (structure, geology etc.)?
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Can my habitable planet have a habitable moon?

So let's say that I have a world with a moon, you know kind of like we do on Earth. But with life on the planet, is it possible to find life on the moon? In the artifexian video on habitable moons, he ...
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212 views

Would humans, and animals be able to survive on this planet?

My question is pretty simple, all the details about the planet are pictured below.
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Would animals from Earth be able to survive and reproduce on this planet?

Some details about the planet and its moon plus the host star. Star: 0.85 Sol, 0.54% of the Sun's luminosity Planet: 0.04926 (M⊕) 4836 km, 0.34 G, Orbits the host star at 0.901 AU. The atmospheric ...
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2answers
433 views

How many Mars sized planets can form and remain stable in the habitable zone of a Sun-like star?

By Mars sized I mean with masses between 0.10 (M⊕) and 0.25 (M⊕), the planets need to have independent orbits around the star. We can assume the habitable zone stretches from 0.70 AU, to 1.5 AU for a ...
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262 views

Is “quasi planet” habitable for life?

I was imaging a system which has a black hole, a star and Earth like planet. The star and planet orbits around the black hole, but the planet has same orbital period as the star, which is a "quasi ...
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Smallest planet that can maintain plate tectonics?

I was wondering what is the smallest a terrestrial planet can be and maintain plate tectonics and generate a magnetic field, atleast to Earth's current age?
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0answers
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Can a gas giant form in the Goldilocks zone and have habitable moons. And if it can how many of those moons could be habitable? [duplicate]

Humanity is about to leave our solar system for some reason and a gas giant with 60 moons has been spotted in the Goldilocks zone of a nearby solar system. They arrive there and it turns out, a space-...
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3answers
264 views

Stability of terrestrial planets orbiting in the Lagrangian points of Jupiter sized planets?

Would it be possible for a terrestrial planet say atleast >0.3 Earth masses orbiting in the L3/L4/L5 and L1/L2 Lagrangian points of a Jupiter sized planet in the habitable zone of a Sun-like star ...
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4answers
421 views

Maximum amount of habitable moons possible around this Jovian planet?

The gas giant has a mass of about 2.13 Jupiter masses in the habitable zone of a Sun like star 0.981 Sol masses, all the moons will need at least >0.12 percent of Earth's mass and a Mars like density ...
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1answer
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Habitability and orbital stability of these moons?

These moons orbit a Jovian planet with 0.52 Jovian mass and at 1.02 AU from a star with 0.98 Sol mass. 3.85 Days, 0.351 Earth, 0.68 G 15.4 Days, 0.242 Earth, 0.59 G 30.8 Days, 0.118 Earth, 0.44 G ...
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2answers
189 views

VY Canis Majoris planetary system

Since the Sun is the only star we know to have life in its planetary system, I came to wonder about if it was replaced by, say, VY Canis Majoris How far would we have to be so that we would still be ...
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1answer
327 views

Could an impact crater make a world habitable?

For most of us, meteors are by far the ultimate planet killers. All it takes is one direct hit to suddenly wipe all life from the face of a world. But, rather than taking life away from a planet, what ...
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2answers
1k views

What Is The Minimum Size Of A Planet To Harbor Human Life?

What is the minimum size of a planet that could harbor human life? You get to decide what the atmosphere is, but I'm reasonably sure that O2, CO2, and H2O are necessary components of the atmosphere. ...
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4answers
289 views

Creating a habitable planet that recieves the same amount of sunlight as Venus

Some details required are, The right mass, should it be higher or lower than Earth? The right rotational period obviously the current Venus is rotating far to slowly. This planet needs to be able ...