When the astronauts descended deep into the caves of ancient civilization, they stumbled upon giants on huge "thrones." Next to them were empty flasks, from which hoses stretched connected at the back to the spacesuits. As a result, people managed to find notes about this. The ancient giants found a source of volatile matter on the moon so similar to oxygen and began to use it. At first, there were no changes, but after they began to fall into euphoria. Gas began to bring them interesting and alluring knowledge, as well as lightness in the body, but outside the moon its effect disappeared. Gradually, many giants flew here and as a result, their civilization perished on the moon, although it originated on Earth. They remained seated in bliss on the stone thrones, reveling in gas. My WIP : https://render.ru/xen/threads/2d-issledovateli-tochka-nevozvrata-otkuda-my-rodom.177323/