Host Bill Nye, CEO of the Planetary Society, posts a selfie with astrophysicist Dr. Neil deGrasse Tyson, recipient of the Cosmos Award for Outstanding Public Presentation of Science, at More to Explore: A Space Celebration with Bill Nye at the Pasadena Civic Auditorium on Saturday, October 24, 2015. The Planetary Society celebrated its 35th year anniversary on October 23.