by Worthy News Washington D.C. Bureau Staff
(Worthy News) – A team of researchers operating in Antarctica has detected strange and unexplained radio signals emanating from beneath the continent’s vast ice sheets, challenging current scientific understanding.
The discovery, published in Physical Review Letters, occurred during an experiment using the Antarctic Impulsive Transient Antenna (ANITA) — a sophisticated array of instruments designed to study cosmic particles.
ANITA, launched by balloon 40 kilometers (29 miles) above the Antarctic ice, was intended to detect radio waves produced when high-energy neutrinos from space collide with the ice below. Antarctica was chosen for this mission due to its minimal radio interference, providing a pristine environment to capture signals from cosmic events across the universe.
But instead of picking up expected neutrino interactions, researchers found radio waves coming from deep below the ice at steep angles–signals that defy current models of particle physics. “The radio waves that we detected were at really steep angles, like 30 degrees below the surface of the ice,” explained Stephanie Wissel, associate professor of physics, astronomy, and astrophysics at Penn State. “The waves should have been absorbed by thousands of kilometers of rock. We still don’t actually have an explanation for these anomalies.”
Neutrinos, often described as “ghost particles,” are produced by high-energy cosmic sources and rarely interact with matter. Trillions pass through Earth–and even our bodies–every second without a trace. Detecting them offers rare insights into distant and extreme cosmic events. As Wissel put it: “If we detect them, it means they have traveled all this way without interacting with anything else. We could be detecting a neutrino coming from the edge of the observable universe.”
However, when the ANITA team compared their data with two other neutrino experiments, the results did not align, indicating that the signals were not neutrinos after all. The source remains a mystery. Some scientists speculate the waves could be linked to dark matter or unknown radio propagation effects near ice, but no theory has been confirmed.
“My guess is that some interesting radio propagation effect occurs near ice and also near the horizon that I don’t fully understand,” Wissel said. “But we certainly explored several of those, and we haven’t been able to find any of those yet either.”
The findings have raised new questions about what lies beneath Antarctica’s ice and how radio waves can travel in ways previously thought to be impossible. For now, the signals remain one of the many unsolved mysteries at the edge of our scientific knowledge.
Copyright 1999-2025 Worthy News. This article was originally published on Worthy News and was reproduced with permission.
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