About this document
Halley by Brittany Mayer is a document available to read on EtoBox.
The document discusses the history of the hollow Earth theory, which proposes that the Earth is hollow with inner shells and spheres. Edmund Halley put forth the idea in 1692 that the Earth consisted of a hollow shell about 800 km thick, with two inner shells explaining anomalous compass readings. Later variations included the idea of inner suns providing light and warmth. In the early 1800s, John Cleves Symmes Jr proposed openings at the poles. The theory persisted into the 20th century despite evidence fr
- Author
- Brittany Mayer
- Language
- EN