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Parallel realities and the deep structure of space time,

sound like science fiction.

But these are matters of real scientific inquiry.

Lord Martin Reese is a cosmologist and astrophysicist

who spends his life contemplating such things.

And I'm strangely comforted by his insistence that we ourselves,

human beings, are the most complex cosmic phenomena by far.

Though Martin Reese says we're probably not the apex of evolution.

He points at philosophical frontiers and ethical frontiers

that citizens and scientists, religious and non-religious

must enter together and with humility all around.

If science teaches me anything, it teaches me that's a

even simple things like an atom are fairly hard to understand.

And that makes me skeptical of anyone who claims to have

the last word or complete understanding of any deep aspect of reality.

I'm Mr. Tippett and this is on-being.

Martin Reese holds the honorary title of Astronomer Royal.

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