When I was a child, there was a French animated series called “The Secret of the Selenites”. The story was captivating: in 1787, the astrologer Sirius, convinced of the existence of the Selenites, set off on an expedition to the Moon with his cousin, Baron Munchausen. The two men and their crew landed and discovered the Selenites, immortal beings who hold the Secret of Eternal Life.
The second part is dedicated to the Selenites, these unreal gigantic characters made up of elements of the cosmos and the Moon.