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Planetary RadioDecember 20, 2017

Exploring the Latest Planetary Science Discoveries With Emily Lakdawalla

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Emily Lakdawalla

Solar System Specialist, The Planetary Society

A holiday edition of Planetary Radio welcomes the Planetary Society’s Senior Editor back from the annual meeting of the American Geophysical Union. Emily reports on amazing developments in planetary science she discovered at the huge conference. Someone will win a half-scale model of the LightSail 2 cubesat when Bruce Betts joins Mat Kaplan for this week’s What’s Up.

A Voyager 2 image of Jupiter’s Great Red Spot, after image processing with modern tools

NASA / JPL-Caltech / Björn Jónsson / Seán Doran

A Voyager 2 image of Jupiter’s Great Red Spot, after image processing with modern tools

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Trivia Contest

This week's prizes are an assembled, half-scale paper model of LightSail 2, and a 200-point astronomy account.

This week's question:

What two orbiters are part of the European Space Agency’s BepiColombo mission to Mercury?

To submit your answer:

Complete the contest entry form at or write to us at no later than Wednesday, December 27th at 8am Pacific Time. Be sure to include your name and mailing address.

Last week's question:

“Cometroid” (not at all an official IAU classification) 3200 Phaeton is responsible for the annual Geminids meteor shower. Who was the mythical Phaeton’s father?


The answer will be revealed next week.

Question from the week before:

How many spacecraft have either flown by or orbited Jupiter?


Nine spacecraft have either orbited or flown by Jupiter.

Listen more: Jupiter's moons, Io, Planetary Society Projects, LightSail, Planetary Society People, Juno, conference report, Jupiter

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