Bill Nye takes us light sailing this week on planetary Radio. Radio. Hi everyone, welcome to Public Radio's travel show that takes you sailing on the

Final Frontier.

I'm Matt Kaplan of the Planetary Society.

So much to talk about this week.

Rather than bring us her regular Q&A segment,

we'll hear from Emily Lachto-Wala

about two of last week's big events in the solar system, the confirmation

of water on the moon and the beginning of Mars Exploration Rover's spirits attempt to free itself

from a Martian sand trap.

Then we'll turn to Bill Nye, the Science and Planetary Guy,

for the details about Light Sale.

The Planetary Society's Ambitious Plan

to fly as many as three solar sails

with the first targeting a 2010 launch.

Bruce Betts will also be along for our regular what's up look at the night sky

this week including puppies.

It really was a busy week.

Rosetta, the European Space Agency's comet mission, had its last close encounter

with Earth. The spacecraft swung past our planet to pick up

speed for its 2014 rendezvous with Comet Churyumoth-Ger-Simenko. Check out the cool images in Emily's blog article. We've got the link at

planetary.org slash radio. While you're in the blog you can read about the big

announcement from the Elcross mission leaders. there really is water hiding in shadows on the moon.

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