A Cassini Saturn update from Lindus Filker this week on planetary radio. Hi everyone, welcome to Public Radio's travel show that takes you to the final frontier.

I'm at Kaplan. As so often happens in science, the Cassini

spacecraft is uncovering new mysteries even as it provides answers to old questions

about Saturn, its rings, and its many moons.

As we've done several times in the past, we'll turn to Deputy Project Scientist Linda Spilker

at JPL for a quick review of what the big spacecraft has recently shown us about that

ringed wonder a billion miles away. We're also not far from a really interesting

Q&A about all that ice at the Martian poles delivered by Emily

Lachto-Wala and Bruce Bats offers a remembrance of Wally Schara in this week's

what's up. Bruce will also tell you where to look for Saturn and other planets while

we give away another planetary radio t-shirt. Of course the loss of Walter Wally

Charra is in our space headlines this week. Hard to believe it has been almost 45 years

since he rode six times around the earth in a tiny mercury capsule. My colleague Amir Alexander has

posted a nice tribute to Schirra at planetary.org.

Planetary society executive director Lou Friedman said that Wally exemplified the spirit of optimism, achievement, and vision that dominated the early days

of the space age.

We miss that and we'll miss him.

Lots more on the news, including the discovery of a molten core deep inside mercury

and lots of wonderful images from New Horizons recent Jupiter flyby.

It's all there at planetary.org.

Time for Emily. I'll be right back with Linda Filker.

Hi, I'm Emily Loch Duwala with questions and answers.

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