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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Are these traits for my planet mathematically accurate? Could it support life?

Mass of star: 0.75 M☉ Radius of star: 0.69 R☉ Surface temperature of star: 4,620° K Luminosity of star: 0.2 L☉ Satellites: 2 Place in solar system: 2nd Mean radius: 8,725.1 km Mass: 2.57 M⊕ ...
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What new types of environments are possible on an intelligently designed habitat? [closed]

Humans have taken the stars and are capable of building pretty much anything they want(but the laws of physics are still the same), and a group of them decide they want to make a habitat with a ...
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How Would I Make an Oceanless World Feasible?

The planet I'm thinking of is of similar size and distance from its star relative to Earth, but it lacks oceans, instead consisting of one massive continent with a huge mountain range (reminiscent of ...
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Feasibilty of binary planet having life

So far I've designed two planets, and would like for them to orbit each other at a distance of roughly 1.25 million km (both planets would easily stay in the habitable zone), the smaller being tidally ...
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Are Geologically Dead Planets Habitable?

One of the planets I'm thinking of for my book series has all of its landmass in the northernmost half of the northern hemisphere (it is thus mostly a water world) and is completely geologically dead. ...
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How long could this wildlife habitat sustain itself?

In my story a group of characters will be sent to a space habitat which contains some of the deadliest alien creatures for a survival training mission. The majority of the species will be carnivores ...
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How long to become a habitable planet

I am creating a world for Sci Fi story in which I am trying to have two non-tidally locked earth sized planets in a binary orbit around Alpha Centauri A. The only way I can think of this happening is ...
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Volcanic island generating its own storms

Picture this, a highly volcanic island sitting in the middle of a temperate or sub-arctic sea, the heat generated by the magma beneath the island and the volcano heats the air enough to generate a ...
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Ways to increase temperature and still be habitable by humans

I am designing a planet that humans can live on for a few tens of thousands of years, while they are hiding from some sort of inter-galactic police force (or whatever). Therefore, it's important that ...
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In a Red Giant Binary System, How Far and How Wide Can the Habitable Zone Be?

Our estimates of our own habitable zone--a piece of space in which liquid water is possible--have varied over the years, but the current estimate is by Ramirez and Kaltenegger in 2017. Based on an ...
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Could bacteria survive on a star?

If the right requirements are met, could bacteria survive on the Sun? The bacteria would spend most of their time in hibernation and reproducing, and when the time comes, they spread out on plasma ...
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Alternative Ozone Layer [duplicate]

The reason for the high level of Oxygen in the atmosphere today is due to the billions of years worth of photosynthetic prokaryotes releasing it as a waste product. Of course, in the higher levels of ...
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The major effects on the habitability of exomoons orbiting this Brown Dwarf

I'll need to give some background to this question. I'm interested in the idea of a densely inhabited star system, and having large exomoons is one way that they can all orbit roughly at the same part ...
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Why would Earth be long-term unsuitable for an advanced alien species that's already colonized it?

I'm writing a story where aliens are using humanity like a botnet to do hyper complex calculations - each infested human has a program running in their subconscious brain that does a small part of the ...
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What kind of star will work for my system?

After what feels like forever and after asking several questions (like this, this and this), I believe I may have decided upon a suitable orbital system for my world: $M_{S}=2.272\;571\;144\;5 \times ...
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How could a fusion device be held at the centre of a ring-shaped space habitat?

I'm trying to create something like a generation ship, but it has no destination, and is travelling endlessly, so is more like a deep space non-orbital habitat for humans. One helpful and appealing ...
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Basic concepts for a functioning generation ship [closed]

I'm writing a story (part of a larger work) which features a generation ship. I don't want to get too deep into the science, because it's not the focus of the story, but I'd like it not to be so ...
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What types of stars do not have a CHZ/Goldilocks zone?

Most stars have a continuously habitable zone (CHZ), but I'm specifically trying to think up ones that do not. Aside from pulsars and black dwarfs (theoretical, as the universe isn't old enough to ...
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How big an area can we possibly make habitable on the moon?

This question focuses on an artificial atmosphere on the moon and the achieved amount being the limiting factor for the size of habitats. I got a lot of beef for the suggestion to terraform the whole ...
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Would this setup of a terraformed moon hold up?

[Edits added in italic] BACKGROUND A few thousand years from now the moon has become one of many habitable places in the solar system. Economy, constant growing knowledge and human will made drastic ...
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Could a planet be habitable due to illumination from the galactic core?

I recently saw this answers where it was suggested that the galactic core could illuminate a planet suffiently to make sure it is always summer on one side of the planet. This got me curious and after ...
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Is it realistic to have a livable planet with a quarter the size of Earth, but with the same gravity?

So in theory, I would want this planet to have the same everything as earth besides the radius (and anything that affects how radius plays into gravity). I know the density of this Planet X would have ...
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Earth Has Four Seasons Lasting Years. Is This Too Much?

In this alternate Earth, the axial tilt is still leaning to the extent of the temperate and polar zones having four seasons--spring, summer, autumn and winter. The one key difference is that each ...
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Algae using UV light from auroras for photosynthesis

I was reading some questions on Quora and I found this claim: The polar regions have a very odd reason for them to have so much oxygen production. You see the Polar aurora run day and night in the ...
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Which Stars Would Best Suit For the Habitable Zone of The Nine Norse Earths?

In an alternate universe, the nine realms of Norse mythology--Midgard, Asgard, Vanaheimr, Jotunheimr, Alfheimr, Hel, Nidavellir, Niflheim and Museplheim--are actual, real-life "Earths", in the sense ...
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Rogue Planet Illuminated by Galactic Centre

The black hole question reminded me of an idea I wanted to implement at some point in a space campaign, but didn't go forward with because I was unsure whether it's merely statistically very ...
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Life around Cepheid Variable stars

Are there any unique challenges life would face evolving on a planet orbiting a Cepheid Variable star? I'm aware this is a broad question, so to narrow it down, consider this a question about Great ...
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A planet illuminated by a black hole?

Is it possible for a planet to be heated and illuminated by a black hole due to Hawking radiation at the same intensity as by a star? What mass and size should a black hole have to produce the same ...
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Keeping an “hot eyeball planet” wet

Consider such a tidally locked planet: Many issues with tidally locked worlds have been discussed, but I'm not clear on how the water cycle for an otherwise Earth-like tidally locked world, would be ...
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In Search of a Super-Bright, Super-Stable Star

Long ago, I asked a question on how to make possible turning the nine realms of Norse mythology--Midgard, Asgard, Vanaheimr, Jotunheimr, Alfheimr, Hel, Nidavellir, Niflheim and Museplheim--into nine ...
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''Habitable'' planet close to a star

Imagine if you will a star comparable with our sun and a planet like earth orbiting at roughly the same distance around this star as our earth around the sun. Would it be possible to place a planet ...
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What is the theoretical maximum number of habitable planets in one solar system?

In the DC comic book universe, the Vega System is a solar system around the star Vega (Alpha Lyrae), which is depicted as having dozens of habitable planets. While it seems to be an implausibly large ...
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If Janus and Epimetheus had moons

Imagine a planet with two moons that have an orbital pattern similar to that of Janus and Epimetheus of Saturn... Is there a way for one of these moons to keep a stable pair of Trojan sub moons? I'm ...
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Intelligent life wiped out in a binary system with a neutron star?

For the purposes of my story, I have created the following setting. An Earth-like planet orbits a binary star system made up of a Sun-like star and a neutron star. For the majority of time (hundreds ...
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376 views

Super earth habitability

I'm trying to build a super Earth that's capable of sustaining human life for space exploration in a way that's close to reality. So far I'm lacking some understanding of planetary science and human ...
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Life on the Broken Ring - an issue of size

One of my ongoing projects is what I think of as the "constructed worlds gallery", a series of Megastructures as settings for stories and games, including things like the "Flying Pie-plate" a world ...
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What would the consequences be of a high number of solar systems being within close proximity to one another?

What would the consequences be of a high number of solar systems being within close proximity to one another? I'm mainly interested in the consequences for life on multiple planets. When I say 'close ...
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Heating a gas giant's moons in a red dwarf system

Being new, this is my first question. I've read some other posts that gave me valuable insight, but I still have some questions. First, some specifics: Star: red dwarf. 80 x jupiter mass. 3 billion ...
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How would a Type I civilization habitable planet be any different to a Type II civilization habitable planet?

This question is a different version of other questions that I have found here discussing a similar but different problem. The problem I'm facing here is about the excess or waste heat that an ...
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Can liquid water exist on the moons of this gas giant?

This is an edited hopefully more focused version of a question I asked a while ago. I made the mistake of asking too many questions the first time so I’ll try and be a bit more focused here. I drew ...
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Atmosphere of habitable world around K-type star

I'm trying to work out the parameters of my planet, using the spreadsheets that Artifexian has developed (particularly this Planet Calculator and this Atmosphere Calculator) as a guide. In order for ...
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A pair of similar celestial bodies coming near each other

In my conworld I have two moons (they could be planets if desired as long as they can stay 'close' to a larger nearby body) of habitable size. I want to reality-check and provide an explanation for ...
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How far away from a Sol-class sun could a planet be and still be habitable?

In my galaxy, I need a planet that is far enough away from its star to be relatively cold compared to Earth, but not so cold that liquid water cold not exist. The planet has 2 continents, 1 northern ...
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What would Define Ecosystems in a “Frozen Moon with Ocean” World

What factors would influence ecosystem development in an ocean on an ice world? It is thought that several moons in our solar system (e.g. Europa) may have significant oceans under their icy crusts. ...
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Determining Planet rotation period that would allow for global Wind Cell

I'm trying to figure out how quickly a planet could rotate while also having a single air flow cell, such as Hadley cells, that would circle from hot pole to cold pole, etc. as in the case of Tidally ...
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How can this habitable planet have a moon with a naturally occurring atmosphere?

Assuming the planet is earth-like, with more surface water and atmospheric oxygen, and within the habitable zone of a sun-like star, how can a moon orbiting this planet retain a thick atmosphere? The ...
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If Earth's atmosphere were to be enclosed, what effects would what have?

A universe-destroying parasite is set loose, and basically earth is placed under magical quarantine. (Think of it like the world is wrapped in magical cellophane.) My question is, how would earth's ...
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What is the Habitable Zone of a Red Dwarf star?

This question is pretty straightforward: What is the minimum and maximum distance for a planet to be in the habitable zone of an average sized (not biggest, not smallest) Red Dwarf star?
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How long would it take for an uninhabitable amount of pollution on a planet to disappear? [closed]

If the world (Earth) were to become so polluted that the surface would become uninhabitable, how long would it take to become as unpolluted as it was before humans? By pollution I mainly mean ...
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Time in relation to life in the Jovian System

I'd just like to preface this with the fact that I'm super new and I apologise if this has been discussed in some way previously (I have looked at similar topics but they haven't quite given me the ...