Posted on Categories Discover Magazine
Escaping the Heliosphere
Humanity has another interstellar emissary.
After launching in 1977, NASA’s trailblazing spacecraft Voyager 2 has finally escaped the heliosphere, the Sun’s protective bubble of charged particles. It follows in the path of its sibling, Voyager 1, which crossed into interstellar space in 2012.
The Sun’s solar wind makes up the heliosphere, which surrounds us and all of the planets in our solar system. The boundary where the hot solar winds of the heliosphere end