The odds are massively skewed against the existence of such a world, even given how massively fucking gigantic the universe is. To have a human-habitable world, you need:
- Solid rock
- Gaseous atmosphere
- Atmospheric pressure between 0.6 to 70 (!) (depending on gases mix) atmospheres
- Right temperature: between -20C and +40C
- Mix of gases so that CO2 is not more than 0.1% and oxygen 20% or equivalent
- Something to filter hard UV rays: for example ozone layer
- Something to push larger asteroids away or attract them: a large moon for example
- Enough greenhouse-effect gases but not too much (:'
- Relatively strong magnetic field to deflect high-energy particles, but not too strong otherwise it creates radiations like Jupiter's
- Water
- Carbon
- Iode
- Ton of other stuff like Potassium and Phosphorus
- No cyanide and other supertoxic compounds like tetrachlorides
Those are all requirements, miss one and you will die, quickly or slowly.
And this is just to barely SURVIVE. I'm not even talking about niceties like food or electricity.
- Solid rock
- Gaseous atmosphere
- Atmospheric pressure between 0.6 to 70 (!) (depending on gases mix) atmospheres
- Right temperature: between -20C and +40C
- Mix of gases so that CO2 is not more than 0.1% and oxygen 20% or equivalent
- Something to filter hard UV rays: for example ozone layer
- Something to push larger asteroids away or attract them: a large moon for example
- Enough greenhouse-effect gases but not too much (:'
- Relatively strong magnetic field to deflect high-energy particles, but not too strong otherwise it creates radiations like Jupiter's
- Water
- Carbon
- Iode
- Ton of other stuff like Potassium and Phosphorus
- No cyanide and other supertoxic compounds like tetrachlorides
Those are all requirements, miss one and you will die, quickly or slowly.
And this is just to barely SURVIVE. I'm not even talking about niceties like food or electricity.