Watching the Birth of Solar Systems this week on planetary radio.

Welcome, I'm at Kaplan of the Planetary Society with more of the human adventure across our solar system and beyond.

Happy World Radio Day.

Sure you may be listening to this on an un-Radio, but our heritage is clear, and there's still

lots of people who hear Plan Rad over the air, and then there are scientists who are using

radio to reveal the Cosmos.

Sean Andrews is one of them.

He leads a project that has shown us in gorgeous detail

an array of protoplanetary discs revolving around young stars.

I'll be talking with Sean and minutes right after we say

hello again to senior editor Emily Lochuwala. Stick around for this week's

what's up as we finally bring back one of the most popular space trivia

contest prizes ever. Emily, the immortal satchel page said,

don't look back. Something may be gaining on you, but that seems to be bad advice for explorers of our solar system.

Well, it's always a good idea to look at things from every possible angle because you just never quite know what you'll see when you have the light glancing almost sideways across a planetary

surface.

Tell us about how this gave us a new view of 2014 MU69, which of course to many is known unofficially as Ultimatoulli.

Well, when you do a fly-by mission, you see things from the front for a while, from the perspective of the sun you see it fully lit you can see features on the surface

but then when you fly past it you get this view with sunlight picking out little

topographic features and the the crescent shape and so you get a second chance to view the geometry of an object.

And with 2014 and you 69 we were able to see these what it's actually a

bylobed crescent looks like a letter b it's got two curves intersecting at the

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