i just did the math and that’s something around 100,000kg/m^3^ to 200,000kg/m^3^. The densest terrestrial material i could find was Osmium @ 22,610kg/m^3^. The surface of a neutron star is estimated at 1 billion kg/m3. Our star’s core density is estimated to be 150,000kg/m^3^. So, uh.