Join us for a progress report from Saturn on planetary radio. Hi everyone, welcome to Public Radio's travel show that takes you to the final frontier.

I'm Matt Kaplan. What's a billion miles away, working perfectly,

and offering up almost daily surprises about a giant ringed planet. It's the Cassini

spacecraft, of course, and Deputy Project

scientist Linda Spilker will give us an update in a couple of minutes.

Who's the highest human of the mall? We'll find out from Bruce Betts in today's

What's Up Space Trivia Contest. It all begins with these space headlines. Dust devils

nothing to get excited about right Unless they're on Mars.

Cameras on the Mars Exploration Rover Spirit

caught two of the little demons for the first time.

You can see them and get an update on both rovers at planetary.org.

Cosmos 1, the first solar sail, is getting closer to launch.

Eight huge triangular blades have been carefully folded and attached to the spacecraft's body.

We'll be bringing you much more coverage of the light-driven vehicle in the coming weeks,

with lift-off planned for sometime between April 20 and May 30.

And NASA has announced the first of its Centennial Challenge competitions.

A total of $400,000 will be presented to teams that develop very strong yet lightweight

tethers for use in space and for advancements in the wireless transmission of electricity.

The idea is to follow in the footsteps of the X Prize and earlier aviation

competitions to encourage new technologies.

Now if only they had one for Best Space Radio show.

You are one minute away from a visit with Cassini's Linda Spilker. In the meantime

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