NEUTRON STAR CRUST

Nuclear pasta phases · density layers · gnocchi → spaghetti → lasagna → bucatini → Swiss cheese
Phase diagram

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Density: - g/cm³
Phase: -

Nuclear saturation density:
ρ₀ ≈ 2.3 × 10¹⁴ g/cm³

Pasta forms between
~0.25 ρ₀ and ρ₀ due to
competition between
Coulomb & nuclear forces