Science
Voyager 1 captures faint ripples in the stuff between the stars – Nature.com
The first spacecraft to visit interstellar space has now become the first to make continuous measurements of waves in that remote realm.

The Voyager 1 spacecraft has detected persistent ripples in the interstellar plasma, through which it has been travelling since it left the Solar System in 2012. By measuring these waves, astrophysicists have made the first continuous measurements of the density of the interstellar plasma, the rarefied medium between the stars.
Launched by NASA 44 years ago, Voyager 1 became the first human-made object to enter interstellar space the region between star systems and is still motoring along. Stella…
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