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Cr0n0x t1_ixe29os wrote

Reply to comment by sanitation123 in JWST identifies the first concrete evidence of photochemistry (chemical reactions initiated by energetic stellar light) and sulfur dioxide in an exoplanet atmosphere by Easy_Money_

Would it be possible to be extremely close to a star as long as It wasn’t super bright or super hot, or is that not a thing.

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sanitation123 t1_ixe2uch wrote

I'm pretty sure it is. I imagine all stars have their own goldilocks zone. I don't know enough about this stuff though.

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yurnxt1 t1_ixfcbnl wrote

You are correct, all Stars have a habitable "goldilocks" zone, at least theoretically however, all stars are not created equally. For example, it's possible for an exoplanet to be perfectly situated within a stars goldilocks zone but also be effectively uninhabitable due to any number of factors. One such star related factor that could make the development of life on a planet very difficult if not impossible would be a situation where the exoplanet is in the goldilocks zone but it's host star is far to active in terms of solar flares/radiation and or other sorts of violent disruption that comes from said exoplanet's host star on a frequent basis.

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TIK_GT t1_ixe4mix wrote

Don't the planets get tidally locked then?

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sanitation123 t1_ixe5639 wrote

There could be areas on tidally locked planets that are habitable near the terminator between day/night.

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nefelibatainthesky t1_ixe5tvi wrote

And if they have oceans or thick atmospheres, the heat can be more evenly distributed

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Karjalan t1_ixfelu7 wrote

Yeah. All stars have a "habitable zone", which is, roughly, the distance a planet would have to be to not be too hot or cold for liquid water to form.

Many other things come into play, the amount of stellar radiation beyond heat, the size of the planet, the planets atmosphere composition, and in the case of many smaller stars, if a planet is tidally locked.

Math/simulations of tidally locked planets have shown that it is possible to get a comfortable temperature and have areas of liquid water due to convection and the overall atmosphere composition and density... But it's obviously a different scenario to what we have on earth.

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