Scientists investigating a strange phenomenon have detected unusual radio signals beneath the Antarctic ice. The discovery was made during a 10-year NASA experiment, originally aimed at detecting high-energy particles called neutrinos. Instead, researchers found enigmatic radio waves that defy explanation under current particle physics understanding. Despite repeated observations and analysis with different instruments, similar signals have not been detected again. To unravel this mystery, researchers are relying on larger, more sensitive detectors to uncover the source of these ghostly signals. The findings were recently published in Physical Review Letters.
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