
Earth’s Mysterious Pulse Every 26 Seconds Baffles Scientists Since the 1960s
Every 26 seconds, Earth emits a faint, rhythmic pulse — a deep, subtle seismic signal often described as a “heartbeat.” First detected in the early 1960s, this peculiar vibration has puzzled geologists and seismologists for decades. It doesn’t cause any shaking that humans can feel, yet it’s detectable on highly sensitive seismographs across the globe….