Meet the Expert:  Dr. Alan Stern,  Planetary scientist and Principal Investigator of NASA’s New Horizon Spacecraft Dr. Alan Stern is a planetaryscientist, space program executive, aerospace consultant, and author. He leads NASA’s $880M New Horizons mission that successfully explored the Pluto system and is now exploring the Kuiper Belt—the farthest exploration in the history of… Continue Reading Episode 83: What is it Like to Fly by Pluto?