Cosmic mysteries revealed from under the earth 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 I hope you're not claustrophobic. Our show, so at home among the

stars, this time descends two kilometers under the surface of our planet. That's where

a remarkable and gigantic instrument of exploration has been

unearthing secrets about the inner workings of our sun, the biggest explosions in the universe,

and why we're not all made of anti-matter.

Our guest is Professor Art McDonald of Queens University, Ontario.

Art directs the Sudbury Neutrino Observatory or Snow.

Note that it's called an Observatory,

not just a detector.

We'll learn why in a few minutes.

Bruce Bats will pay us his usual visit,

bringing visions of the night sky and another chance to win a

planetary radio t-shirt.

That's later on what's up.

News news news news news beginning with the publication in nature of more Cassini radar findings about

cloud-shrouded Titan. The spacecraft actually collected this data as it passed

over Saturn's Moon back in February of 2005.

But this is the first write-up in a peer-reviewed journal.

What's that you say, Bucky?

You let your subscription lapse.

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