Organics on Pluto and Fairy Castles on the Moon this week on planetary radio. Radio. Welcome to the travel show that takes you to the Final Frontier.

I'm Matt Kaplan at the Planetary Society.

We heard from Alan Stern last week and the head of the

New Horizons mission to Pluto is back with more. He'll share news about that distant world,

but he also has some revelations about our own moon.

Bill Nye has more to say about NASA's new budget

and Bruce Betts will take us up into a particularly fascinating night sky.

Have you seen snapshots from space? The second episode of our new video series with

Emily Lochuwala is on YouTube. Here's the Planetary Society Science and Technology

Coordinator to tell us more.

But first, we'll visit yet another moon.

Emily, welcome back.

Tell us about this February 22nd entry in the blog,

which begins with this really pretty stunning image of IAPITUS.

Yeah, IAPITUS is one of the most distinctive moons in the solar system.

It's pretty large, actually.

It's the third largest moon of Saturn, and it has this walnut shape. It's got a high ridge running almost all the way around its equator which is very strange. There are ridges on other moons, but Iappadus only has one of them and it's exactly on the

equator so it looks very strange. I'm glad you made that walnut analogy because

that's the first thing I thought and I've never had that impression until I saw

this image this incredible image that that you've got at the top of the entry.

And of course it begs the question, how did it get one single ridge that's aligned exactly to the

equator? And a lot of people have published ideas about this.

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