NASA's Voyager probes solar system border

By Joey Roulette
Updated November 6 2019 - 3:21pm, first published 9:03am

The journey of NASA's dauntless Voyager 2 spacecraft through our solar system's farthest reaches has given scientists new insight into a poorly understood distant frontier: the unexpectedly distinct boundary marking where the sun's energetic influence ends and interstellar space begins.