It is bad that spacemen brought things back from the moon (In NASA experiments, three types of Earth bacteria died after exposure to an Apollo 11 core-tube soil sample from the moon. This resulted in quarantine procedures for astronauts). The Great Spirit says in the prophecy man will not go any further when he builds a city in the sky. People are planning to build a space station. The prophecy tells of the gradual devastation of the Earth's natural processes because of human interference. The Hopis are today concerned for the whole planet and fear that every living thing might be destroyed. They are very worried about the spiritual centre and for all people to heed the instructions of the Great Spirit, otherwise everything will go down.