Hollow Earth | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-05-16

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Hollow_Earth


00:00:48 1 Hypothesis
00:05:02 1.1 17th and 18th centuries
00:07:04 1.2 19th century
00:09:11 1.3 20th century
00:13:38 1.4 Concave Hollow Earths
00:16:59 2 Contrary evidence
00:17:09 2.1 Seismic
00:17:42 2.2 Gravity
00:19:13 2.3 Direct observation
00:20:01 3 In fiction
00:22:44 4 In popular art
00:24:00 5 See also



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SUMMARY
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The Hollow Earth is a historical concept proposing that the planet Earth is entirely hollow or contains a substantial interior space.
Notably suggested by Edmond Halley in the late 17th century, the notion was tentatively disproven by Pierre Bouguer in 1740, and definitively by Charles Hutton (1778).
It was still occasionally defended in the early-to-mid 19th century, notably by John Cleves Symmes Jr. and Jeremiah N. Reynolds, but by this time was part of popular pseudoscience and no longer a scientifically viable hypothesis.
The concept of a hollow Earth still recurs in folklore and as the premise for subterranean fiction, and a subgenre of adventure fiction (Journey to the Center of the Earth, At the Earth's Core).