Planetary Radio • Oct 17, 2018

Back to Saturn for Brand New Cassini Science

Please accept marketing-cookies to listen to this podcast.

Download MP3

On This Episode

20170920 linda spilker thumbnail

Linda Spilker

Voyager Mission Project Scientist at NASA's Jet Propulsion Laboratory

Bruce betts portrait hq library

Bruce Betts

Chief Scientist / LightSail Program Manager for The Planetary Society

Kaplan mat headshot 0114a print

Mat Kaplan

Senior Communications Adviser and former Host of Planetary Radio for 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.
"The Day the Earth Smiled"
"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.Image: NASA / JPL-Caltech / SSI

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 [email protected] 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.