Schumann resonance spectrogram showing a rare, isolated 25 Hz spike at 02:40 UTC, highlighted in red, appearing just hours before 3I/ATLAS’s closest approach to Earth.
A rare terrestrial signal emerges within hours of an interstellar object’s perigee, raising new scientific and planetary-defense questions.
• A narrow, isolated frequency spike appears where none is expected.
• The timing aligns almost precisely with 3I/ATLAS at its closest approach to Earth.
• The signal falls inside a frequency band historically linked to seismic precursors.
By Samuel Lopez | USA Herald – At approximately 02:40 UTC, global monitoring stations tracking Earth’s Schumann resonances recorded an anomalous and sharply defined energy burst centered at 25 hertz. The signal appeared just three hours and twenty minutes before the calculated moment of 3I/ATLAS’s closest approach to Earth — a timing alignment that immediately stood out during my review of the data. Unlike common atmospheric disturbances, which present as broadband noise spread across multiple adjacent frequencies, this event was narrowly confined, with no meaningful power increase at 24 Hz or 26 Hz. In plain terms, whatever caused this signal was precise, selective, and energetically focused.
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