And beside all this, between us and you there is a great gulf fixed: so that they which would pass from hence to you cannot; neither can they pass to us, that would come from thence.
( Luke 16:26 ) KJV
The popular science “liquid outer core” is speculative at best, and there is no reason why it can’t be open space. The P-wave Shadow Zone is the great gulf of which Jesus spoke in Luke 16:26.
Principia Mattymatica 