What is the word for "the study of the afterlife"?
Thanatology is the scientific study of death, but is there a better term for the study of the afterlife?
It is called Eschatology. Eschatology is the study of the afterlife.
Oxford Dictionaries define it as:
The part of theology concerned with death, judgement, and the final destiny of the soul and of humankind.
Citation from the book: The Ethical Foundations of Criminal Justice By Richard A. Spurgeon Hall, Carolyn Brown
The systematic study of the afterlife is called Eschatology