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The Bible's Book of Ezekiel describes how the prophet saw a flying chariot emerging from a whirlwind and a cloud of fire.
The chariot was carried by four human-like angels each with four faces, and below it were four mysterious wheels.
Scholars claim it was around 593BC in modern day Kuwait. But there has been fierce debate on how to interpret the verses.
Famed Swiss Ufologist Erich von Däniken claimed it was evidence of an alien visitation, rather than a vision from God.
He was so convincing that Nasa scientist Josef Blumrich later wrote a book explaining how such a craft would have operated.
Roman chronicler Livy left a fascinating account of "many prodigies" spotted in 214 BC, including "phantom ships" that were "seen gleaming in the sky".
The historian Plutarch wrote about an even more remarkable event during a battle in 74BC.
He said "with no apparent change of weather, the sky burst asunder and a huge, flame-like body was seen to fall between the two armies.
"In shape it was most like a wine-jar, and in colour like molten silver."
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