Can hollow Earth theory be disproven?

[Niaboc67]

I have a friend who vigorously believes in hollow Earth theory. Your typical dreaded up conspiracy theory hippie type. I've looked around the internet and know there are threads similar to this but I'd like to open up a discussion here. How would one disprove hollow Earth theory? I can't imagine something as obvious as HET is unfalsifiable.

Thank you

 

[davenn]

the results of seismology would be one
The reflection of seismic waves off the various layers in the earth
Seismology proved the outer core was liquid as S waves won't traverse it
but the inner core is solid as can be seen with its interaction with P waves ...

from this page

cheers
Dave

 

[Greg Bernhardt]

I'm sorry but this is currently a banned topic
https://www.physicsforums.com/threads/physics-forums-global-guidelines.414380/#post-3929007