Earth’s 26-Second Heartbeat
Deep beneath the surface of the ocean, our Earth hums a quiet, rhythmic tune—a subtle vibration pulsing every 26 seconds. It’s not something youll feel beneath your feet on a morning stroll, but for scientists armed with sensitive seismometers, this phenomenon—often called the Earth’s “heartbeat”—has been a source of fascination and debate for over half a century.
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