The Black Planet II

The Black Planet is mentioned twice in Poul Anderson's Technic History (see here) and once in his Psychotechnic History, in a sermon:

"'...the Devil is waitin'! On the Black Planet which is called Hell he waits...'"
-"The Snows of Ganymede," IV, p. 171.

Real planets, Mars, Venus, Ganymede etc, exist in alternative future histories;

the fictional planet, Lithia, exists in the incompatible futures of James Blish's A Case Of Conscience and The Seedling Stars;

a mythical planet identified with a hereafter can certainly exist in the minds of people living in different future histories.

Davenant has accepted an invitation to a religious service while his colleagues drink: a wise move - Davenant's, I mean. The more that the Engineers can learn about their hosts the better.

While I was still working, I accompanied two colleagues to their places of worship. What I learned in one place was that, even if my beliefs were Christian, this would not be my way of expressing them! I would probably go for a mix of middle-of-the-road Church of England and Quaker but the question is academic.

Davenant finds technological manipulation of religion which again parallels the Angels of the Lord in Heinlein's Future History. Indeed, the White American clergy are called "Angels."