/sci/ - Science & Math

>>16142663
>>16142674
>can't have an M-type due to constant flares/tidal locking/small HCZ or just insufficient visible light for photosynthesis
>K-type looking unlikely due to intense X-Ray/UV radiation early in life
>F-type similar but likely too short lived
>ditto for A9/B8V type (which are also hot)
>B/O-types exist to eat shit (and look pretty doing so)
>star has to be in the galactic HCZ away from core regions and active supernovae and star forming regions
>need a quiet FGK solar analog
>sufficiently high metallicity, formed in a cloud with enough poison
>gas cloud needs heavy radioactive elements
>also need high amount of phosphorus for organics
>likely need enough material to form gas giants to shepherd debris but also deliver them to the inner planets via impacts
>the planets themselves need a strong magnetosphere, thick atmosphere at minimum
>need enough mass, radioactivity, and subsurface bridgmanite to generate and convect internal heat
>active plate tectonics and volcanism courtesy of tidal forces from a non-locked star and a large moon(s)
>said moon likely created through a giant grazing planetary collision
>atmospheric pressure and composition has to be sufficient to not cause exceed acidity, crushing, or a runaway greenhouse hell
>need a solvent for life such as water or ammonia, for technological civilizations to arise you also need to be able to set things on fire which requires an oxygen atmosphere to do efficiently
You can't have this many (and at least a dozen more things I'm probably forgetting on the top of my head) criteria or things going against habitability and abiogenesis and not realize the Copernican principle is more likely than not (unless somehow proven otherwise) a bunch of pretentious conundrums of philosophy.