Hum of plasma waves in the 'void' of interstellar space detected by Voyager 1 -- Science & Technology -- Sott.net

© Mark Garlick/Science Photo Library/Getty Images
Illustration of Voyager leaving the Solar System.
Voyager 1, having spent over 43 years zooming away from Earth since its 1977 launch, is now a very long way away indeed.
Its distance from the Sun is over 150 times the distance between Earth and the Sun. It takes over 21 hours for transmissions traveling at light speed to arrive at Earth.
It officially passed the heliopause - the boundary at which pressure from the solar wind is no longer sufficient to push into the wind from interstellar space - in 2012.
Voyager 1 has left the Solar System - and it's finding that the void of space is not quite so void-like, after all.

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