An interesting period in comics. MAN-GODS FROM BEYOND THE STARS would be Marvel cashing in on the huge international success of Von Daniken's CHARIOTS OF THE GODS. Von Daniken has been thoroughly debunked of course and he admitted in interviews that he made things up for a better story, but his books topped the best-seller lists for years.
Kirby's riff on this was THE ETERNALS, yet another series that would be worked much better being left out of the interconnected universe.