Planetary Radio: Space Exploration, Astronomy and Science

A MESSENGER From Mercury—Principal Investigator Sean Solomon Returns

28:50 | Oct 28th, 2014

MESSENGER has been orbiting the innermost planet for more than three-and-half-years. Principal Investigator Sean Solomon returns with a status report as the mission enters its final phase.Learn more about your ad choices. Visit megaphone.fm/adchoices