For hundreds of years unexplainable "sky quakes" or roaring explosions have been heard in various parts of the world, long before jets existed to break the sound barrier. UFOs—"Unidentified Flying Objects," not necessarily piloted by human creatures—have been buzzing around the sky for centuries. In modern times,
For hundreds of years unexplainable "sky quakes" or roaring explosions have been heard in various parts of the world, long before jets existed to break the sound barrier. UFOs—"Unidentified Flying Objects," not necessarily piloted by human creatures—have been buzzing around the sky for centuries. In modern times,