Forget "habitable super earths" how about a nice "mini earth?
Core of iron, more dense than earth, so it's smaller but has the same gravity. Then a crust like earth and atmosphere. I guess the atmosphere would need to be deeper to have enough pressure?
I wonder how small you could go?
https://sauropods.win/@futurebird/113598051092014600
@futurebird So basically Kerbin?
wiki.kerbalspaceprogram.com/wi…
@futurebird
Hm. If we keep the size and use a denser core, bad things happen.
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@futurebird as one reference point, planet made of solid molten gold with the same gravity as Earth would be ~3x smaller.
But also, almost 63% of the planets in the solar system have gravity […]
@futurebird No liquid core layer means no magnetosphere, which I believe means more problems with radiation. I seem to recall that leading to more rapid loss of atmosphere.
@futurebird What about moons instead? There's a lot of possibility for moons around gas giants perhaps. I recall in some story (I think something by Asimov?) there was a rogue star known as […]
@futurebird
I believe there's a published paper about that from the early 20th century...
@futurebird
I remember diving into this when I was young, for SF reasons.
It's a bit tricky because the ability to retain an atmosphere is actually a function of escape velocity, not surface […]
2024-12-05 michael_w_busch ┃ edited
@futurebird Below a third of an Earth mass or so; given that you want a surface that is warm enough for liquid water, it gets hard to simultaneously hold onto enough of an atmosphere to have […]
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