https://www.americanhauntingsink.com/
Various entities could emerge from other realms and dimensions.
https://www.coasttocoastam.com/guest/taylor-troy-89636/
https://www.bumpinthenight.net/
https://www.scientificamerican.com/article/ghosts-aliens-quantum-gravity/
https://www.space.com/more-universe-dimensions-for-string-theory.html
https://www.space.com/32728-parallel-universes.html
11 Dimensions Explained (Eleven Dimensions) - What are Dimensions & How Many Dimensions are There? https://www.youtube.com/watch?v=ejfCrExQl_E
Ghosts – or the (Nearly) Invisible
Spectral Phenomena in Literature and the Media
Series:
Edited By Maria Fleischhack and Elmar Schenkel
"In this volume, ghost stories are studied in the context of their media, their place in history and geography. From prehistory to this day, we have been haunted by our memories, the past itself, by inklings of the future, by events playing outside our lives, and by ourselves. Hence the lure of ghost stories throughout history and presumably prehistory." https://www.peterlang.com/view/title/18459
