What does the Bible say about aliens?

According to the King James Version, there are two possible mentions of extraterrestrial activity during biblical times as reported in the book of Ezekiel. He refers to four creatures resembling man but all having one likeness. These creatures came out of the sky in a cloud of fire and brightness.

These creatures supposedly traveled in and out of the sky in a round, wheeled vehicle which made a noise similar to a waterfall. In both incidences he described the color of the vessel as a beryl stone, which is typically transparent to opaque. Ezekiel also suggests that there was possible contact with these creatures.