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Planetary RadioOctober 17, 2018

Back to Saturn for Brand New Cassini Science

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On This Episode
Linda Spilker head shot
Linda Spilker

Cassini Project Scientist, Jet Propulsion Laboratory

Bruce Betts Head Shot 2015
Bruce Betts

Chief Scientist / LightSail Program Manager, The Planetary Society

Mat Kaplan
Mat Kaplan

Planetary Radio Host and Producer, The Planetary Society

Our most frequent guest returns with exciting, just-published research enabled by the 20-year mission’s enormous success. Linda Spilker has served as Cassini Project Scientist for 8 years, and was Deputy Project Scientist for the previous 13. You’ll also get the chance to win Bruce Betts’ great new intro to astronomy book in this week’s space trivia contest.

Cassini makes the plunge

Cassini makes the plunge
NASA's Cassini spacecraft plunges toward the gap between Saturn and its rings.

NASA / JPL-Caltech / SSI

"The Day the Earth Smiled"
In this rare image taken on 19 July 2013, the wide-angle camera on NASA's Cassini spacecraft has captured Saturn's rings and our planet Earth and its Moon in the same frame.

Trivia Contest

This Week’s Prizes:
A trendy Planetary Radio t-shirt from the Planetary Society Chop Shop store, a 200-point astronomy account, and a signed copy of Bruce Betts’ new book, Astronomy for Kids.

This week's question:

On a typical pair of binoculars, what do the two numbers mean?

To submit your answer:

Complete the contest entry form at or write to us at no later than Wednesday, October 24th at 8am Pacific Time. Be sure to include your name and mailing address.

Last week's question:

What rocket launched the Apollo 7 crew 50 years ago?


The answer will be revealed next week.

Question from the October 3 space trivia contest question:

There was no new trivia contest question in our October 3 episode, so there’s no answer this week.

Listen more: Cassini, pretty pictures, podcasts and videos, mission status, Planetary Radio

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