Voyager 1 Reaches Surprisingly Calm Boundary of Interstellar Space

By Geoff Brumfiel of Nature magazine Seventeen and a half billion kilometers from Earth, mankind's most distant probe seems to be on the edge of interstellar space. The Voyager 1 spacecraft is at the limit of the 'heliosheath', where particles streaming from the Sun clash with the gases of the galaxy. [More]

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Voyager 1 Reaches Surprisingly Calm Boundary of Interstellar Space