Mysterious song from outer space discovered
Chorus waves, which affect the safety of astronauts and satellites, have been found in a place where their existence was thought impossible
In the 1960s, scientists at the Halley Research Station in Antarctica began hearing mysterious waves originating over the Earth’s equator. Their radio receivers were picking up intense bursts of electrons shaking the magnetosphere, the layer created by Earth’s magnetic field that protects life from space radiation. When these signals were converted into sound, they produced a whistling sound that could be mistaken for the chirping of birds at dawn.
