NASA launched the New Horizons mission to Pluto in January 2006. It was a long-anticipated project that almost didn't happen.
As Alan Stern, planetary scientist and manager of the project, wrote in a new book he co-authored, "It was disappointing to me to learn that senior scientists insisted that a mission to Pluto wasn't justified simply for its exploration value."
Stern joined MPR News host Kerri Miller to discuss his new book, "Chasing New Horizons: Inside the Epic First Mission to Pluto," which he co-authored with David Grinspoon.
Use the audio player above to hear the full discussion.