NASA’s Voyager 1 Probe Detects the Steady ‘Hum’ of Plasma in Interstellar Space
Voyager 1—the most distant human-made object—has made yet another remarkable discovery having to do with interstellar space. It’s steady, persistent, and long-lasting: a low-frequency hum that’s droning away at approximately 3 kHz. This is evidence of plasma, matter so hot that electrons have been stripped away from their atoms, resulting in an ionized, or charged,…
