Planetary Radio • Apr 23, 2013

Live at the Planetary Defense Conference!

On This Episode

Brent Barbee

Flight Dynamics Engineer for Goddard space Flight Center

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Amy Mainzer

NEOWISE and NEOCam Principal Investigator for Jet Propulsion Laboratory

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Bill Nye

Chief Executive Officer for The Planetary Society

Cathy Plesko

Applied Physics Research Scientist for Los Alamos National Laboratory

David Trilling

Assistant Professor of Physics and Astronomy for Northern Arizona University

Planetary Radio host Mat Kaplan joined Bill Nye and four passionate planetary explorers on stage at the Planetary Defense Conference in Flagstaff, Arizona.

Related Links

Trivia Contest

This week's prize is Bill Nye the Science Guy's voice on your answering system!

This week's question:
What is the name of the pioneering planetary geologist who did the first detailed geological mapping of Meteor Crater in Arizona? He was also central to the determination that it was caused by an impact, along with lunar and other craters.

To submit your answer:
Complete the contest entry form at http:planetary.org/radiocontest no later than Monday, April 29, at 2pm Pacific Time.

Last week's question:
What is the diameter of Meteor Crater in Arizona?

Answer:
The answer will be revealed next week.

Question from the week before:
What is the reflective coating on the mirrors of the Chandra X-Ray Telescope?

Answer:
The mirrors are coated with Iridium.