According to new research, alien radio signals traveling from distant star systems may be transformed by plasma surrounding those stars—potentially causing us to overlook clear evidence of extraterrestrial intelligence. As signals journey through space, charged particles in the stellar environment can alter their characteristics so dramatically that Earth-based receivers miss them entirely. Researchers now propose a method to reverse this plasma distortion and recover the original signal. This breakthrough matters because decades of SETI data may contain signals that were previously misinterpreted or dismissed as noise.

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