In Snorri Sturluson's Prose Edda, what we should be viewing as the first scholarly interpretation of the poetic passages from the manuscripts known as the Codex Regius and the Hauksbók, we often see modern heathens and scholars use this account of the "9 worlds" in Norse mythology. The word used here is "heima" which more accurately means "homes" and not world's. When examining the primary sources found in the poetic passages we do not find "9 worlds" but rather 3 planes where different beings are thought to have lived.
Understanding the cosmology provides us with a glimpse into the heathen worldview of the past. But how does it all work?
This is just a short excerpt of a deep study published in the site Germanic Mythology, please follow the link below: