The Fermi Paradox: If the universe is vast and old, teeming with potentially habitable planets, why haven’t we detected any signs of extraterrestrial intelligence? Enrico Fermi posed this question in 1950, highlighting the contradiction between high probability of alien civilizations and the lack of evidence. Proposed solutions range from the “Great Filter” (a near-inevitable barrier to advanced life, possibly ahead of us) to zoo hypotheses, self-destruction, or communication methods we can’t perceive. Recent exoplanet discoveries intensify the paradox. SETI continues scanning for signals, while technosignature research expands. The paradox forces us to confront humanity’s fragility, rarity, or cosmic isolation—and whether technological civilizations inevitably vanish before becoming interstellar.
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