Exploring Saturn, this week on Planetary Radio.

Welcome to the Travel Show that takes you to the Final Frontier. I'm at Kaplan of the

Planetary Society. We're back with one of our favorite and most frequent guests this

week. Cassini Mission Project Scientist Linda Spilker has the latest science and wonder from that great

ring planet.

The space above our own planet just gets busier and more business-like.

That's according to Bill Nye, the science guy.

The family that stargazes together stays together, at least if they are the Hershels.

And that's just one thing that we'll learn from Bruce Betts in today's What's Up segment

that includes a chance to win OK Go Swag.

We begin with the Planetary Society's senior editor Emily Loch Duwala.

Emily, couple of things for us to talk about today, including a reference to some stuff that you're tracking for the rest of us in your your Twitter account. First, what are these

photos, these crazy rolling images of Earth that you posted to the blog at

planetary.org on the 19th.

Well I'm always on the lookout for odd images of Earth from space.

We have lots of spacecraft that are supposed to take photos of Earth in Earth orbit.

And then there's deep spacecraft that sometimes take photos of Earth as they fly by or depart. But this was a new one for me. This was from a spacecraft called Cluster, which has been in orbit for 16 years.

Actually, it's four spacecraft, and they have wonderful names.

Their names are Rumba, Tango, Salsa, and Samba.

And they have.

No Chacha?

No Chacha. There could have been a lot of other dance options but but let's not get distracted so we're talking about the cluster spacecraft which had these basically webcam cameras on them in order to watch their deployment.

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