
A depiction of the "doorway to heaven", aka Duat, in Egyptian mythology terms, shown below the chair of Osiris, seen judging the dead scribe Ani (c.1250BC) somewhere in the Judgment Hall in the afterlife. [1] The second main alternative to Duat, as the model for Egyptian heaven, is for the dead to get onto the "boat of Ra", to sort of bath eternally in the light of the sun, or something to this effect.

A depiction of the "doorway to heaven", aka Duat, in Egyptian mythology terms, shown below the chair of Osiris, seen judging the dead scribe Ani (c.1250BC) somewhere in the Judgment Hall in the afterlife. [1] The second main alternative to Duat, as the model for Egyptian heaven, is for the dead to get onto the "boat of Ra", to sort of bath eternally in the light of the sun, or something to this effect.

In religio-mythology, heaven, as contrasted with hell, both of which being generally classified as “afterlife”, refers to []

Other
In c.1920, Paul Foote penned his famous “The Temperature of Heaven and Hell” (see: thermodynamics of hell), wherein he used Boyle’s law to talk about souls and heat.

Quotes
The following are related quotes:

“I have already been to heaven. It was quite nice there, but I told them they could have it even better.”
— Walther Nernst (1941), “last words”, told to his wife Emma [7]

“The two door panels, below the chair on which Osiris sits, may indicate that Osiris’ throne represents the gateway to the Duat.”
— Ogden Goelet (1994), “Commentary on the Corpus of Literature and Tradition Which Constitutes the Egyptian Book of the Dead, the Book of Going Forth by Day” [1]

“The human brain is like a computer that will stop working when its components fail. There is no ‘heaven’ or afterlife for broken-down computers; that is a fairy story for people afraid of the dark.”
— Stephen Hawking (2011), interview (Ѻ) statement

References
1. Faulkner, Raymond. (1972). The Egyptian Book of the Dead: the Book of Coming Forth by Day: Complete Papyrus of Ani, Featuring Integrated Text and Full-Color Images (translator: Ogden Goelet; Preface: Carol Andrews; Introduction: Daniel Gunther; Foreword: James Wasserman) (Amz) (pgs. 43, 166). Chronicle Books, 2015.
2. Cropper, William H. (2004). Great Physicists: the Life and Times of Leading Physicists from Galileo to Hawking (§10: Walther Nernst, pgs. 124-33; last words, pg. 133). Oxford University Press.

Videos
● Thims, Libb. (2015). “Atheism for Kids | Lecture 12 | Moral Gravity, Higher Powers, and Death” (Ѻ), Atheism Reviews, Sep 7.

External links
● Heaven – Wikipedia.