The Moon, Mars, Jupiter, comets, asteroids and beyond — NASA is on a journey of scientific discovery that promises to reveal new knowledge of our solar system’s content, origin, evolution and even the potential for life elsewhere. Discover how we're exploring your solar system: https://science.nasa.gov | NASA 360

Eleven billion miles away – more than four times the distance from us to Pluto – lies the boundary of our solar system’s magnetic bubble, the heliopause. Here the Sun’s magnetic field, stretching through space like an invisible cobweb, fizzles to nothing. Interstellar space begins. Even New Horizons, which passed Pluto back in 2015 and is now 50 astronomical units from the Sun, hasn’t yet reached the heliopause. Only two active spacecraft, Voyager 1 & 2, have actually ventured out into interstel