Voyager 1's Journey Into Interstellar Space

Thirty-five years after its launch, Voyager 1 is now the most distant man-made object, more than 11 billion miles from the sun and new evidence shows it’s nearing interstellar space. Host Ben Kieffer, talks with Voyager 1 scientist and University of Iowa space physicist, Don Gurnett, about the next phase of the spacecraft’s journey.