on the phone from the caves of Mars this week on planetary radio. Hi everyone, welcome to Public Radio's travel show that takes you to the final frontier.

I'm Matt Kaplan. And yes, we will be on the satellite phone with a cave

explorer, though he's not quite on Mars. Not yet anyway. Jut Wynne of the U.S. Geological

Survey and Northern Arizona University will join us from the

ultra-arid Atacama Desert in Chile, where he is learning to find caves from the air, hoping

someday to do the same on the red planet.

Bill Nye, the science and planetary guy, puts us in an even more exotic locale next to a lake on Saturn's moon, Titan. We'll also learn the A be ease of asteroids with

Emily Lochuwala and Bruce Bats will help point out what's up in the night sky

and help me give away another space trivia contest prize.

Do you know that it has been just over two years since the Stardust At Home Project opened

up its virtual microscope?

Tens of thousands of you have been part of the hunt for tiny bits of

interstellar dust trapped by the Stardust spacecraft.

It has been a long hard search, but now there's exciting news in an update at planetary.org.

You may also want to take a look at Emily's blog where you'll find a Phoenix Mars Lander

update and some Cassini images of Saturn's Moon Enceladus that will make

you feel like it is just beyond your fingertips.

It just happens that Bill Nye is also excited about what we've found on another of Saturn's moons.

Bill is a guest star on an upcoming episode of the television series, Stargate Atlantis,

along with Planetary Society President Neil degrass Tyson.

He was shooting on location in the northwestern United States, but he didn't want to miss the

chance to share some thoughts about Titan.

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