Planetary Radio • Jun 12, 2019

Quasars and Quanta: Exploring Einstein’s Quantum Riddle

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On This Episode

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David Brin

Science Fiction Author, Futurist, Astrophysicist, and Planetary Society Advisory Council member

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Andrew Friedman

Assistant Research Scientist for UC San Diego Center for Astrophysics & Space Sciences (CASS)

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Jason Gallicchio

Professor of Physics for Harvey Mudd College

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Brian Keating

Experimental Astrophysicist, UC San Diego Center for Astrophysics & Space Sciences (CASS) and Associate Director for Arthur C. Clarke Center for Human Imagination

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Bruce Betts

Chief Scientist / LightSail Program Manager for The Planetary Society

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Mat Kaplan

Senior Communications Adviser and former Host of Planetary Radio for The Planetary Society

Even though his own work led to it, Albert Einstein never cared for quantum mechanics concepts like entanglement, which he called “spooky action at a distance.” While there’s no doubt it is real, could something even more mysterious be hiding under it? We’ll talk with three eminent physicists and physicist/science fiction author David Brin about the Nova documentary on this subject. Planetary Society Chief Advocate Casey Dreier analyzes President Donald Trump’s recent tweet about the Moon and Mars, and Senior Editor Emily Lakdawalla introduces a new edition of The Planetary Report, now available to all.

Mat Kaplan with "Einstein’s Quantum Riddle" guests
Mat Kaplan with "Einstein’s Quantum Riddle" guests Mat Kaplan (far left) at UC San Diego with guests David Brin, Brian Keating, Andrew Friedman and Jason Gallicchio.Image: Mat Kaplan
Einstein’s Quantum Riddle
Einstein’s Quantum Riddle Image: WGBH Educational Foundation

This week's question:

Where in the solar system is a feature named Dogana?

To submit your answer:

Complete the contest entry form at or write to us at [email protected] no later than Wednesday, June 19th at 8am Pacific Time. Be sure to include your name and mailing address.

Last week's question:

What is the alloy that the LightSail 2 booms are made of? These long booms pull the sections of the solar sail out of the body of the spacecraft.


The answer will be revealed next week.

Question from the May 30 space trivia contest:

What is the brightest pulsar as seen from Earth at radio wavelengths?


The brightest pulsar in the sky as seen from Earth at radio wavelengths is Vela.