With the release of Disclosure Day, Steven Spielberg’s new film about aliens, a question as old as science fiction itself resurfaces: if aliens were to arrive on Earth, would they come to conquer us, to study us… or perhaps to eat?
We must begin here with a word of caution. There is no scientific evidence that extraterrestrial beings have visited Earth, let alone any information about what they eat. NASA states that there is no data to support the claim that unidentified anomalous phenomena (UAPs) are alien technology, and the US Department of Defence has also found no verifiable evidence of extraterrestrial technology or activity.
But the literal meaning of “extraterrestrial” is simply “from outside Earth”. In that broad sense, the only extraterrestrials whose diet we know of are, oddly enough, humans – specifically the astronauts who spend weeks or months in space. While their experiences do not tell us what an alien would eat, they do show us that leaving Earth changes the way we eat.
As long as it's not us.
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