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Planetary RadioOctober 18, 2016

Charley Kohlhase and the Greatest Voyage

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On This Episode
Charley Kohlhase and Richard Spehalski with Cassini and the DVD
Charley Kohlhase

Engineer, Artist, Cassini Mission Designer

How did the Voyager spacecraft manage to weave their magnificent way through the outer planets of our solar system? Mission Design Manager Charley Kohlhase led the team that crunched the numbers to select the best possible trajectory from 10,000 candidates. The results have been astounding. Emily Lakdawalla prepares us for the arrival of Europe’s Exomars orbiter and Schiaparelli lander. Bill Nye says millennials and President Obama share excitement about humans to Mars. Win a copy of “Star Trek: The Official Guide to the Universe” in the What’s Up segment.

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Trivia Contest

This week's prizes are Andrew Fazekas’ book, “Star Trek, The Official Guide to Our Universe,” a Planetary Society rubber asteroid, and a 200-point astronomy account.

This week's question:

In what region of Mars will the European Space Agency’s Schiaparelli land?

To submit your answer:

Complete the contest entry form at or write to us at [email protected] no later than Tuesday, October 25th at 8am Pacific Time. Be sure to include your name and mailing address.

Last week's question:

What moon in our solar system has the longest orbital period around its parent planet?


The answer will be revealed next week.

Question from the week before:

What are the names of the two asteroids Rosetta studied, and the name of the comet it orbited and was just set down on?


The asteroids studied by the Rosetta spacecraft were 21 Lutetia and 2867 Steins, while the comet it orbited was 67P/Churyumov Gerasimenko.

Listen more: history, Space Policy, mission status, Planetary Radio, ExoMars TGO, Mars, Bill Nye

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