Questions tagged [habitable-zone]

Questions about the "Goldilocks Zone" around a parent star where conditions are just right for the potential of life developing.

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What kind of star would allow for life like our Sun/Earth and then go nova?

In the Star Trek Prime Universe, Star Trek: The Original Series, the home stars of the Fabrini, Platoans and Sarpeidons went nova, while in Star Trek: The Next Generation one of the stars in the ...
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How Wide Would the Habitable Zone Be in a Singular Red Giant System?

Astrobiologists looking for signs of life outside Earth usually take excitement over planets orbiting red giant stars because a larger, brighter star usually means a farther-away but still wider ...
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Could a Jovian or Saturnian moon keep its atmosphere if the system was within the habitable zone?

Currently the atmosphere of Titan is 1.5x thicker than Earth's atmosphere, but it's also much much colder. It's been said that an astronomical body can keep it's atmosphere if the escape velocity is ...
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Why the Circumstellar Habitable Zone is defined as it is, if life could be possible outside of it?

According to Circumstellar habitable zone In astronomy and astrobiology, the circumstellar habitable zone (CHZ), or simply the habitable zone, is the range of orbits around a star within which a ...
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If Mercury and Venus where to collide would it make a habitable planet? [closed]

I have been wondering for a while now about a scenario of where if you combined Venus & Mercury would it be habitable if located in the goldy locks zone? I have found in my little research that ...
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What percentage of gas giant exoplanets are in the habitable zone?

Approximately what percent of exoplanet gas giants discovered so far are in the habitable zones of their stars? I hear that most of them are "Hot Jupiters", orbiting so close to their stars that the ...
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Detecting habitable planets

From my understanding we detect planets by measuring dips in light intensity from the star the habitable planet is orbiting when it passes by it. There are 2 things I don’t understand about this ...
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Can BY Draconis variable stars sustain any form of complex life?

I wanted to ask this, because while I was working on two fictional planets back on the Worldbuilding SE, one of them being habitable, which orbit the 61 Cygni A star of the 61 Cygni binary star system,...
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Distance from the sun can equal a hospitable planet?

It is said that planets are continuously moving away from the sun. At one time Mars was just the right distance to support life at least temperature wise? Could Venus be far enough from the sun ...
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Does habitable zone take tidally locked bodies into account?

Imagine a tidally locked planet orbiting a red dwarf, where habitability is not situated close to terminator zone, but on a "small" cap normal to incident starlight (zenith) with permanent average +15 ...
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Could life survive on a planet orbiting a neutron star? [closed]

Suppose an Earth-like planet orbits a neutron star, though specifically not a pulsar. Is there any possible orbit, around any possible neutron star, in which the planet could support human life?
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Why bother looking for Earth-like planets?

Is it really necessary to look for Earth-like habitable zone planets, when it is likely that the "humans" to reach that planet will be bio-engineered or entirely mechanical by the time we would be ...
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Luminosity in polar regions

I tried to find the habitable planets, thus I suppose to calculate the effective temperatures that incident on the planets from their host stars, I used $$ T_\mathrm{eff}=\frac{L}{4\pi\sigma_\mathrm{...
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How much light would be reflected from Jupiter to Europa (in Europas night)?

Suppose Europa is found habitable and humans start living on it. Europa is close to Jupiter and during the night Jupiter would be reflecting light to Europa, just like our full moon reflects light to ...
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371 views

Which would be safer: removing hydrogen or adding hydrogen to our sun?

If we want to extend the lifespan of our habitable zone safely, would it be safer to institute a yearly 'tax' on our suns outer layer of hydrogen, or a yearly 'subsidy' to our suns outer layer of ...
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Luminosity value to use for the calculation of the habitable zone?

I'm currently studying the star system of Gliese 570 and I´m trying to calculate the habitable zone of the component A from the luminosity value in relation of the Sun´s. I´ve read that the needed ...
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Do blue giants have a habitable zone?

Or would the planet(s) need to be too far away for life to exist?
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Estimating inner and outer boundaries of habitable zone for Sun

What would the inner and outer boundaries of the “habitable zone” be for planets with an albedo that differs from that of the Earth? For example a planet with an albedo of 0.07 or 0.90 (the values ...
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Complex life in binary black hole - Sun(s) system

I was wondering if there could theoretically exist systems in which an Earth-like planet was in the habitable zone of one (or two) Sun-like star(s), while actually not orbiting around any star. To be ...
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Does the dust around SMBH's protect habitable planets from jets?

The supermassive black hole in the Milky Way is covered by dust as seen from here. Is it common that SMBH's are covered in dust in their galactic disks? Would that dust absorb and disperse a jet from ...
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Can a tidally locked planet have their own habitable zone?

As we know, if a planet is near a star and is tidally locked, then at near side it is very hot and at far side it is very cold. But between 2 sides there should be a gradient of temperature change and ...
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Notable differences if all stars would disappear except the Sun

I am not an astronomy expert, but as of today, all other stars than the Sun have little to no effect on life on Earth. So I was thinking, would there be any differences for the Earth at all if all ...
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Is axial tilt critical for life?

According to this explanation at the Georgia State University website, Axis Tilt is Critical for Life . . . The Earth's spin axis is tilted 23.5° with respect to the ecliptic, giving ...
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What is space temperature around Earth?

What is the equilibrium temperature that a black body will reach at the Earth's distance from Sun?
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Habitable Planet around Red Dwarf

Is there the possibility for a habitable Planet around a red dwarf? It is not required that the whole surface is habitable, but it shouldn't be a tiny spot. After reading a bit I assume the planet ...
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Better than Earth habitability [closed]

Earth undoubtly has very good conditions for supporting life. Although it is expected that many other planets on the outer space have conditions at least as good as Earth, the vast majority doesn't, ...
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Ramifications of black hole stellar system

Recently, I got around to seeing the movie Interstellar. In it, the characters of the movie visit a stellar system that appears to be built around a black hole instead of a star. On top of this, their ...
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Questions about a fictional binary system, and habitability [closed]

Note: Questions are at the bottom. The rest had simply been written in a format to better organize my thoughts. The formulas used to construct this fictional solar system, had been borrowed from ...
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What is the Habitable zone all about?

I've a question on Habitable zone. Does Habitable zone represent the region where we humans or the living beings of earth can survive? Or is it a region where life can exist? If it is second I want ...
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Which spiral arm of the Milky Way is Kepler-62 in?

I am trying to find out which spiral arm of the Milky Way the star Kepler-62 and its planetary system are in. All I can find by Google searching is that it is part of the Lyra constellation, but I don'...
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Help in determining the features of an unusual, fictional star system

(Hope this is the right Stack-exchange site for this question) I'm working on a sci-fi RPG campaign, set on a very atypical location. Since this is a work of fiction, there's enough room for ...
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Simple life on asteroids

If there were an asteroid orbiting its star within the habitable zone and this asteroid contained liquid water, would it be possible for simple life such as bacteria to form?
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Galactic Habitable Zone

Do galaxies have habitable zones the same as stars do? Say in a galaxy with a very active nucleus producing a lot of heat and radiation, would there be a point at which no star's planets could harbor ...
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What is the maximum number of planets in the habitable zone?

At present, it seems like we are alone in our solar system. How many earth-like planets would fit into the habitable zone of the solar system? The orbits should be stable for quite a time, i.e. for ...
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Could there be Earth-like planets in binary or trinary systems?

Could Earth-like (suitable for Human habitation) planets exist in systems with 2 or 3 suns, have any been found? With more than a single star, isn't it likely that the habitation zone would be too ...