Hopi Indians believed the evidence of the ancients, that when the sky will shine blue star, it will mark the approach of the last day, the day of judgment. For a few months, people can observe the phenomena intended to be a prediction on the vaults of heaven.
The Blue Star Kachina is a prophecy by Hopi tribe of Arizona. It is a spirit that will indicate the coming of the end of the world by emerging as a blue star. It is believed to be ninth and last sign before the "The Day of Purification."