Inside Virgin Galactic Space ship 2, this week on planetary radio.

Welcome, I'm Matt Kaplan of the Planetary Society with more of the human adventure

across our solar system and beyond. Let's head for California's Mojave

Desert and the busy hangar where Virgin spaceship

Unity is getting ready to rocket into space. Bill Nye is marking a significant

achievement in efforts to protect humanity from Spaceborn Armageddon.

On our weekly What's Up segment, Bruce Betts will mark what would have been Carl Sagan's 82nd birthday.

Just before we present another space trivia contest.

We begin as we should by visiting with the Planetary Society's senior editor Emily Lockdawala.

Emily were a bit late getting to it but still plenty to look forward to in this

month in your what's up in the solar system for November of 2016. Let's start with

Cassini which you say is having a big big month.

It really is. Cassini is now circling Saturn.

To me it feels a bit like circling the drain but we're not quite there yet.

But it is going around really fast, like once every eight or nine days.

It's fast for Cassini, because that means it's quite close to Saturn.

And the reason they've got so close is because they are just about at the end of the month to do this major Titan flyby that will

abruptly shift its periapsis, the closest point to Saturn on its orbit, way closer to

Saturn than it's been before. They're actually right now the

Pariapsis is close to Titan. They're going to jump over all the rings, the E and G rings,

to right outside the F ring, which is right outside the main ring system.

So they're going to be going in between the G and F-rings for 20 orbits.

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