Dark matter makes up approximately 27% of the universe, but its nature remains one of the greatest mysteries in modern physics. One of the most fascinating candidate particles is the axion, a theoretical particle that could solve not only the dark matter enigma, but also an anomaly in the strong nuclear force.
Most surprisingly, according to recent theoretical calculations, axions could be interacting with Earth's magnetic field in our planet's core. This interaction would produce a specific resonant frequency, a kind of 'tone' or 'singing' that could be detectable with extremely sensitive instruments.
- Depth: The phenomenon would occur in Earth's outer core, about 2,900 km beneath our feet.
- Estimated frequency: The 'singing' would have a frequency in the microelectronvolt (μeV) range, corresponding to very low frequency radio waves.
- Detection: Experiments such as ADMX (Axion Dark Matter eXperiment) actively search for these signals using powerful magnets and resonant cavities.
If confirmed, we would not only have the first direct evidence of dark matter, but we would have discovered that our own planet is constantly emitting an invisible and inaudible cosmic melody, a reminder of the profound mysteries that lie at the center of the Earth and in the fabric of the universe.
Source: Article: 'Axion resonant production in Earth's core' in Physical Review D. Experiment: ADMX (Axion Dark Matter eXperiment) from the University of Washington.
