ELi5: Do all stars have habitable zones?


So I know that stars have habitable zones where, when you get to a certain distance, a planet within this zone is in a comfortable position to host life. But do all stars have this habitable zone or does the certain nature of stars get rid of the possibility of a habitable zone?

In: 5

All stars have a [habitable zone](https://en.wikipedia.org/wiki/Circumstellar_habitable_zone). It is based on the temperature of the star, since the star is the energy source for the planet. [This graphic](https://upload.wikimedia.org/wikipedia/commons/f/f0/Diagram_of_different_habitable_zone_regions_by_Chester_Harman.jpg) shows where Earth, Venus, and Mars are in the habitable zone, as well as how the zone changes for different temperatures. Some exoplanets are also included.

Some stars I imagine would be too unstable. This would mean that they either bathe their system in absolutely huge solar flares that would wipe out any life on a planet in what would be the habitable zone or that their energy output goes up and down so the habitable zone would be moving in and out too quickly.

Binary star systems of particular types or distances, which are estimated to be 50% of the galaxy’s star population, can easily have non-habitability, because they’d sweep any planet out of such an orbital zone or would have intolerable ranges of solar radiation.


I don’t know this for a fact, but I don’t think pulsars have habitable zones, they’re just too violent.

𐑕𐑑𐑩𐑑𐑦𐑕𐑑𐑦𐑒𐑩𐑀𐑰, π‘₯𐑹 𐑹 𐑀𐑧𐑕, 𐑣𐑬𐑧𐑝𐑻 π‘žπ‘Ί 𐑸 𐑕𐑩π‘₯ 𐑝𐑺𐑰 π‘―π‘΄π‘‘π‘’π‘Ήπ‘žπ‘° π‘§π‘’π‘•π‘§π‘π‘–π‘§π‘―π‘Ÿ, 𐑕𐑳𐑗 π‘¨π‘Ÿ π‘π‘«π‘€π‘•π‘Έπ‘Ÿ.

>!Statistically, more or less, however there are some very noteworthy exceptions, such as pulsars.!<