Bizarre radio signals that defy physics detected under Antarctica: 'It's one of these long-standing mysteries'

A balloon and science equipment sit on the surface of ice against the backdrop of a clear blue sky.

Instruments flying more than 18 miles (29 kilometers) above Antarctica detected two unexplainable radio pulses coming from below the ice — and these signals seem to defy particle physics.

Researchers determined the radio pulses came from angles around 30 degrees below Antarctica's surface, which the laws of physics theoretically prohibit. Calculations suggest the signals had to pass through thousands of miles of rock to get to the surface; however, scientists expect the pulses to be absorbed by the rock on this journey, rendering them undetectable.