News > The farthest spacecraft from Earth has detected a 'hum' in the space beyond our solar system

The farthest spacecraft from Earth has detected a 'hum' in the space beyond our solar system

14/05/2021 03:56 PM | Click to read full article

More than 14 billion miles from Earth, NASA's Voyager 1 spacecraft is listening to the background music of interstellar space. The probe, which launched more than 40 years ago, exited our solar system in 2012. Five years after its interstellar foray began, Voyager 1 began picking up a monotonous droning.

The spacecraft is detecting the constant burble of charged gas, known as plasma. The sound is created as this plasma ripples through the interstellar medium - a soup of radiation, gaseous particles, and dust that fills the space between stars.