Unbeknownst of the people. There are some creatures that living on the moon. Astronauts cannot see them because they are far away and no one can get to the place where they live. They are called vampires, they look like humans, but when the so-called solar moon comes, their form changes, they become wolves. The solar moon occurs several times in a month. So every solar moon, they become wolves. They live on the moon just like humans, they have minds and they are not affected by any element of the moon. Unlike in the world, when it's cold people get cold, when it's hot people get hot, but vampires don't feel it in the moon.
They do not age, because they are immortals. But they don't multiply because they rarely have children, female vampires only get pregnant when destined, but this rarely happens.