This subcategory is for discussing the physics of hollow planets. Some people may wonder, "How can a planet be hollow? Isn't it physically impossible?" Well, no, and here is where we discuss this.
Some examples of topics of interest here may include (but are not limited to):
- Hollow Planets: A Feasibility Study of Possible Hollow Worlds by Jan Lamprecht (purchase the book)
- The Ultimate Reality by Joseph H. Cater (purchase the book)
- The Awesome Life Force by Joseph H. Cater (purchase the book)
- The formation of hollow planets (an example of a relevant presentation)
- Any other theories or attempts to discuss the physics of hollow planets (such as this)