@futurebird
Hm. If we keep the size and use a denser core, bad things happen.
Iron: Density = 7.87 g/cm³Nickel: Density = 8.91 g/cm³Earth's Core: The average density is estimated at around 12.6–13 g/cm³ due to the high pressures and temperatures compressing the iron-nickel alloy.
Gold: Density = 19.32 g/cm³ at standard conditions.
We can expect 24–26 g/cm³ density from a gold core earth.
g = GM/R2, we change M but keep the rest, so this scales linearly with the mass, and since the core is about 10-20% of the total earth mass, around 1.1 times current g, so around 11 m/s2 (10% higher as an upper estimate).
Escape velocity scales with this, we get 12-12.5 km/s instead of 11.2 km/s, and chemical multistage rockets gibvt you 13 km/s at best.
Space travel with chemical engines on gold core earth would be almost payload-less.
https://infosec.exchange/@isotopp/113600112316698905
@isotopp
I feel like I’m not understanding something basic. The idea is to have a more dense core but smaller so that gravity stays the same?
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