Dr. Don Brownlee, principal investigator for the NASA Stardust mission, talks about his involvement in this unprecedented mission to collect and bring back material from outside the orbit of the moon. What clues can the collected material hold for understanding the formation of comets and the solar system itself? The University of Washington is committed to ensuring digital accessibility in our services, programs, and activities. If you encounter accessibility barriers using videos found on this channel, please contact UW Video at uwvideo [at] uw [dot] edu.