Why Voyager 1 Still Hasn't Hit a Single Thing After 50 Years in Space

Voyager 1 has been traveling through space for nearly forty-nine years, crossing the asteroid belt, flying past Jupiter and Saturn, and continuing more than twenty-five billion kilometres from Earth without ever crashing into a substantial object. In this calm space documentary, we explore why the Solar System is far emptier than most diagrams make it appear, how far apart asteroids really are, what Voyager actually has collided with, how microscopic dust impacts can be detected, and why the same tiny particles that barely trouble Voyager could become dangerous for future spacecraft traveling at a significant fraction of the speed of light.