Where Are the Aliens? New Study Suggests They’re Stuck Like Us

In 1950, famed astrophysicist Enrico Fermi posed a profound question during a casual lunch with colleagues: Where is everybody? In other words, if there’s an extremely high probability that advanced alien civilizations exist somewhere, why haven’t we found evidence of them?

That’s how the story goes, at least. But regardless of the circumstances surrounding its utterance, that question—known today as the Fermi paradox—has captured the minds of researchers ever since. In a new paper,…