How Special Is Our Universe?

An episode of the Gresham College Lectures podcast, hosted by Gresham College, titled "How Special Is Our Universe?" was published on December 6, 2017 and runs 51 minutes.

December 6, 2017 ·51m · Gresham College Lectures

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Summary

If the fundamental constants of nature differed from their measured values, life as we know it would not have emerged. Stars are witness to the forces of electromagnetism and gravity - displace this equilibrium and the existence of nuclear-burning stars is at risk. In such a universe, stars would never have formed, or might have collapsed to black holes. Theories of the multiverse suggest that life-containing universes are incredibly rare. We live in one of these, whether by cosmological nat...

Episode Description

If the fundamental constants of nature differed from their measured values, life as we know it would not have emerged. Stars are witness to the forces of electromagnetism and gravity - displace this equilibrium and the existence of nuclear-burning stars is at risk. In such a universe, stars would never have formed, or might have collapsed to black holes.

Theories of the multiverse suggest that life-containing universes are incredibly rare. We live in one of these, whether by cosmological natural selection or by the consequences of a theory yet to be formulated.

The transcript and downloadable versions of the lecture are available from the Gresham College website: https://www.gresham.ac.uk/lectures-and-events/how-special-is-our-universe

Gresham College has been giving free public lectures since 1597. This tradition continues today with all of our five or so public lectures a week being made available for free download from our website. There are currently over 2,000 lectures free to access or download from the website.

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