A mystery signal detected high in the sky above Antarctica defies current models of physics and could represent a new particle, scientists say.

ANITA was placed in Antarctica because there is little chance of interference from other signals. To capture the emission signals, the balloon-borne radio detector is sent to fly over stretches of ice, capturing what are called ice showers. Credit: Stephanie Wissel / Penn State

Scientists have recently detected a pattern of strange signals in the sky above Antarctica. It defies current physics models and could represent a new particle, scientists told Space.com.Discovered by the Antarctic Impulsive Transient Antenna (ANITA) experiment,