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Hollow World: Difference between revisions
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{{quote|'''Old man:''' ''Years ago, I climbed the mountains, even though it was forbidden.''
'''Kirk:''' ''Why is it forbidden?''
'''Old man:''' ''I am not sure, ''(writhes and gasps in pain from a control device)'' but things are not as they teach us. [[Title Drop|For the world is hollow and I have touched the sky]].''
|''[[Star Trek: The Original Series]]'', "For the World Is Hollow and I Have Touched the Sky"}}
So, mainstream scientists today believe that the Earth under our feet has a lot of molten rock and metal filling it and have gathered a lot of pretty solid evidence for it. The only complication is that we've never been able to send a human down more than several miles to actually study it up close, largely because [[No One Could Survive That]]. Which is why since times that are [[Older Than Radio]], early scientists, writers and more than a few crackpots have believed that there just might be something...or indeed, someone (say, [[Ultraterrestrials]])...down there, possibly powered by a suitably sized sun in the center.
The most known early example is [[Jules Verne]]'s ''[[
Note that its usual configuration, with people walking about on the inner surface, wouldn't work; a hollow sphere has ''no'' net gravitational pull on any object inside it (although some theorists, such as [[wikipedia:John Cleves Symmes, Jr|John Symmes]], claim that this actually ''could'' work due to the [[wikipedia:Centrifugal force|centrifugal force]] caused by the planet's rotation).
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