Earth's magnetic field trembles at ultra-low frequencies — perhaps dark matter is speaking to us this way. Scientists turned the planet into a detector and found a way to amplify the signal hundreds of times, using the ionosphere as a resonator mirror. New data has narrowed the search area for dark photons.
🎯 The sought signal lies in the band below 100 Hz — here whales sing and power grids hum. To catch the cosmic 'whisper,' scientists have to filter out the voice of the ocean and the noise of civilization.