Okay, real talk. Some people think that Costa Express machines do coffee machine coffee.

Get real. Costa Express is the real deal.

It's real Costa coffee, made with real beans and real fresh milk and with over 13,000 machines

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machines do the instant stuff because at Costa Express we do real coffee instantly.

Costa Express. It's coffee machine coffee made a little better. This is a CBSI in the world. I'm John Bachelor with my good colleagues David Grinspoon

who is now the senior scientists for astro biology strategy. I'm old enough to remember David when he was

an astrobiologist out west and I was introduced to the topic. Now he's the top of the

pile and is great fun to talk to him about Amuamu.

David Livingston is here with me, Dr Space, my colleague and co-pilot.

David Grinspoon, I turn to you about the next time.

A moo-amoo is surprised.

It dashed through the solar system on its mission to, we don't know where.

But if there's one, it's like mice in a country house, there's never one mice. So are we getting ready

for the next time? What do we need to do, David? You're absolutely right. One of the really cool implications of the discovery of Amuamu is that it

implies a population of interstellar objects. There's no reason to suspect there's only one. In fact, if there was only one, what are the chances

that it would have passed through our solar system and we would have observed it?

So it implies a larger population. In fact, we've already observed one other

interstellar comet since then, a comet called Borosov.

So now it's just a question of how many of these objects are there, what is their population,

what is their velocity distribution, how often will they travel through the solar system,

and as you imply, how can we be ready for the next one.

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