Planetary Society co-founder and Emeritus Executive Director Louis Friedman traveled to Russia more than 50 times, working to advance international space cooperation and the exploration of Mars. As the USSR became the Russian Federation, Lou watched the attempted launch of the first-ever solar sail from a submarine, flew above a Soviet airfield in a balloon, and toured a top secret Russian nuclear lab with Edward Teller, inventor of the US hydrogen bomb. He has captured these and other stories in his new book. Now he joins Planetary Radio host Mat Kaplan to share them with us. Join us for a great conversation. You can buy a signed our unsigned copy of Planetary Adventures in the Planetary Society store: https://planetary.org/store.