Scientists are still stumped about a decade-old mystery: unusual radio signals detected by an instrument in Antarctica. The Antarctic Impulsive Transient Antenna (ANITA) experiment, launched nearly 20 years ago, picked up bursts of energy that couldn’t be explained by known physical processes.
Researchers have considered various explanations, including signs of dark matter or new subatomic particles. However, none have been proven conclusively. The signals seem to originate from beneath the surface of the Antarctic ice, at angles that don’t match typical neutrino behavior.
New research is underway with a more powerful detector, which will aid in identifying the source and providing more information about these enigmatic events. While some scientists speculate that the signals might be related to dark matter, others believe they could indicate an unknown feature of the ice itself.
Source: https://www.popularmechanics.com/science/environment/a69632707/anomalous-signals-in-antarctica