meta_pixel
Tapesearch Logo
Log in
Within Reason

#115 Phil Halper & Niayesh Afshordi - What Came Before The Big Bang?

Within Reason

Alex J O'Connor

Religion, Morality, Ethics, Society & Culture, Cosmicskeptic, Religion & Spirituality, Philosophy

4.91.8K Ratings

🗓️ 4 August 2025

⏱️ 120 minutes

🧾️ Download transcript

Summary

Niayesh Afshordi is a professor in the Department of Physics and Astronomy at the University of Waterloo. Phil Halper is a science communicator and YouTuber. Together, they have authored a book called "Battle of the Big Bang: The New Tales of Our Cosmic Origins", an overview of the state of modern cosmology on the nature of the big bang. Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

Click on a timestamp to play from that location

0:00.0

Ready to launch your business? Get started with the commerce platform made for entrepreneurs.

0:04.8

Shopify is specially designed to help you start, run and grow your business with easy customizable themes that let you build your brand.

0:12.4

Marketing tools that get your products out there. Integrated shipping solutions that actually save you time.

0:17.4

From startups to scaleups, online, in person and on the go. Shopify is made for

0:22.8

entrepreneurs like you. Sign up for your $1 a month trial at Shopify.com slash setup.

0:29.9

Phil, Naesh, welcome to the show. Thanks. Great to be on. Pleasure to be here.

0:35.2

What exactly is the Big Bang, Phil? Well, people think they know,

0:41.0

but actually there's quite a bit of controversy as to what we even mean by the term Big Bang.

0:46.3

So we talk about two definitions, the hot Big Bang, and that's just the idea that the universe

0:53.0

evolved from a very hot, dense state. And then

0:56.9

after that, it's expanded and expanded and it called and then galaxies formed and then planets

1:03.6

formed and us. But there's another definition of the Big Bang, which we might call the Big Bang

1:10.5

singularity.

1:11.6

That says that 14 billion years ago, time stopped ticking.

1:17.6

This was the beginning of the universe.

1:20.6

So that's based off of theorems proven by Penrose and Hawking.

1:25.6

And what's interesting is that neither Penrose nor Hawking actually stood by those theorems.

1:32.5

They actually think that some of the assumptions in the theorem don't hold in reality.

1:37.1

And so maybe we shouldn't trust the idea that the Big Bang was the beginning.

1:41.6

And in fact, Niayash and I went to a large conference in Copenhagen,

1:46.2

and we surveyed physicists. We asked some all sorts of controversies within the field.

1:51.6

And in fact, the only one where we got a majority view was that the Big Bang should not be

...

Please login to see the full transcript.

Disclaimer: The podcast and artwork embedded on this page are from Alex J O'Connor, and are the property of its owner and not affiliated with or endorsed by Tapesearch.

Generated transcripts are the property of Alex J O'Connor and are distributed freely under the Fair Use doctrine. Transcripts generated by Tapesearch are not guaranteed to be accurate.

Copyright © Tapesearch 2025.