Yggdrasil and the Nine Realms: The Structure of Norse Cosmology
Yggdrasil is the Norse world tree said to bind nine realms — though no surviving source names all nine. The record, the roots, and where reconstruction begins.
The Firmament in Ancient Hebrew Cosmology
The Firmament in Ancient Hebrew Cosmology
What the scriptures actually describe — the raqia, the waters above, Sheol, and the Great Deep.