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Who's Who


The Cast

Mat Kaplan

Planetary Radio host and producer Mat Kaplan combines a more than 40-year history in broadcasting with his even longer-lived passion for space exploration to create our radio and podcast series. It’s his great good fortune to have weekly conversations with the scientists and engineers, astronauts and advocates who are leading humankind’s expansion into the final frontier. He also provides key technical support for our Planetfest celebrations and other major events, and helps share the mission of the Society with diverse audiences around the world.

Bill Nye

CEO, Bill Nye. Yes, the Science Guy is now the Planetary Guy. Come along on a cosmic journey with Bill and learn more about Your Place In Space.

Bruce Betts

Our resident planetary scientist and director of science and technology will keep you up to date on all the exciting projects we are working on. From searching for dangerous asteroids to flying our very own solar sail spacecraft, Bruce will make sure you know what's going on plus enlighten you with his unique bits of space trivia with Random Space Facts, too!

Emily Lakdawalla

Emily Lakdawalla is an internationally admired science communicator and educator, passionate about advancing public understanding of space and sharing the wonder of scientific discovery.

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