17. Edmund Halley’s Hollow Earth Theory
Adding onto the theories about the shape of the Earth is an English philosopher and acclaimed scientist; Edmund Halley.
He espoused the idea that the Earth was hollow from calculations previously done by Isaac Newton; the calculations were later found out to be wrong, but it helped Halley compose his theory that there were four magnetic poles on the Earth.
He later claimed that within the Earth was an ‘inner Earth’, a “Subterranean orb” that could’ve possibly been populated. Before Halley published his theory, in 1691 writers already had their hands on his theory and tried to connect the Green Children as travelers from the inner Earth visiting the outer Earth.
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