NASA Voyager 2 could be nearing interstellar space

This graphic shows the position of the Voyager 1 and Voyager 2 probes relative to the heliosphere, a protective bubble created by the Sun that extends well past the orbit of Pluto. Voyager 1 crossed the heliopause, or the edge of the heliosphere, in 2012. Voyager 2 is still in the heliosheath, or the outermost part of the heliosphere.

NASA's Voyager 2 probe, currently on a journey toward interstellar space, has detected an increase in cosmic rays that originate outside our solar system. Launched in 1977, Voyager 2 is a little less than 11 billion miles (about 17.7 billion kilometers) from Earth, or more than 118 times the distance

The Possibility of Interstellar Travel

Artist concept for a futuristic starship.

Mankind depends on exploration. We long to satisfy our curiosity for what lies in every direction, expanding trade routes and learning to adapt to new terrain. And while it used to suffice us to explore our Earth, we’re now directing our gaze somewhere much, much further from home. Star systems

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