Year in Review: Voyager 1 reaches interstellar space
Planetary probe is first to pass beyond heliosphere
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2013/12/pia17462main_8k.jpg?fit=1030%2C580&ssl=1)
GOING THE DISTANCE Voyager 1 is the first human-made object to break out of the heliosphere.
JPL-Caltech/NASA
Planetary probe is first to pass beyond heliosphere
GOING THE DISTANCE Voyager 1 is the first human-made object to break out of the heliosphere.
JPL-Caltech/NASA