The Erie Silence this week on planetary radio. Hi everyone, welcome to Public Radio's travel show that takes you to the final frontier.

I'm Matt Kaplan of the Planetary Society. Are we alone?

And if we're not, are we missing the evidence that E.T. is out there?

These are just a couple of the questions that are brilliantly considered in Paul

Davies new book The Erie Silence. Paul is my guest on today's show.

Bill Nye, the Science and Planetary Guy's Commentary, will look at the disagreement between Neil Armstrong and Buzz Aldrin

over NASA's new plans for space exploration.

Later today in our What's Up segment,

Bruce Betts and I will sing along as we present a song about planetary radio live.

You may still have time to reserve your seat for the April 30 show in Pasadena, California by going to brown paper tickets.com.

It's time for our regular conversation with Emily Loch Duala, the Planetary Society's

blogger and Science and Technology Coordinator.

Emily, first up this week, you have a nifty tour that celebrates the 20th anniversary

of the Hubble Space Telescope.

That's right, it's hard to believe it's been 20 years since Hubble was launched and of course it's been

producing spectacular photos of places across the galaxy and across the universe since then, but I decided

that since pretty much every other blogger was writing about Hubble

that I would focus on the planets that Hubble is seen. So I showed photos of

every single planet in the solar system that Hubble is photographed, which is

everything but Mercury and a few other things as well.

Yeah and one beyond our solar system.

Yes.

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