I’ll be speaking at St Hilary’s in Melbourne tomorrow, on the topic of the fine-tuning of the universe for life. It’s free!

Time: 8pm-9:30pm, 29th May, 2018
Location: 12 John St, Kew Victoria
More details here.


My most recent paper with Pascal Elahi (UWA), Jaime Salcido (Durham), Richard Bower (Durham) and Geraint Lewis (Sydney), as part of the Eagle Collaboration, is doing the rounds of the popular press. I’ll post some of the articles here, and keep updating. Check out the video!

I did this research (mostly) while at Sydney University, but I’ve started a new position at Western Sydney University – more details soon.

  1. Sydney Morning Herald: Bad news for the multiverse: it’s still not likely Also, the Canberra Times and The Age (Melbourne).
  2. Cosmos Magazine: Multiverse theory cops a blow after dark energy findings
  3. IFLS: If A Multiverse Exists It Could Abound With Life
  4. Newsweek: What Is The Multiverse? Parallel Universes Could Be Hospitable To Life, Scientists Say
  5. The Independent: We could live inside a multiverse that is full of alien life, new study suggests
  6. Astrobiology Magazine: Could a multiverse be hospitable to life?
  7. inverse.com: New Multiverse Research Suggests Scientists Need a New Law of Dark Energy
  8. Geek.com: Science Says: Multiverse May Sustain Life
  9. The Register: Get over yourselves: Life in the multiverse could be commonplace
  10. New Atlas: Simulations suggest multiverse is either teeming with life – or doesn’t exist
  11. EarthSky: Is there life in the multiverse?
  12. Eureka Alert: Could a multiverse be hospitable to life?
  13. Science Alert: The Multiverse Could Be Teeming With Life But Is Also Problematic, Says New Study
  14. Inquisitr: New Research Questions The Multiverse Theory, Calls For A New Law Of Dark Energy
  15. Bizsiziz.com: The Multiverse Could Be Teeming With Life But Is Also Problematic, Says New Study
  16. Advocator: Could There Be Life in the Multiverse?
  17. India.com: A multiverse may be hospitable to life: study
  18. Silicon Republic: Mysterious force could determine whether life exists in multiverse
  19. Sputnik News: “Multiverse” May Be Hospitable to Life After All
  20. whatsnew2day.com: Bad information for the multiverse: it is nonetheless not going
  21. scienmag.com: Could A Multiverse Be Hospitable To Life?
  22. International Business Times: Multiverse’s High Dark Energy Levels Don’t Hamper Life’s Chance Of Existing Elsewhere
  23. TheTeCake: New find on multiverse shocks scientists!

I’ll be speaking at The Atrium Theatrette in Perth next thursday, on the topic of the fine-tuning of the universe for life. It’s a ticketed event, but you get drinks and canapes for your $30.

Time: Thursday 10 May, 5.30pm-8pm
Location: The Atrium Theatrette, Level 4, 168 St Georges Terrace, Perth
Tickets: Follow the link here.


I’ll be speaking at University Of Technology, Sydney on Monday 16th April, 2018. This event was originally pitched to me as another talk about the book, but has since evolved into a four-person discussion/debate event with Prof Peter Slezak (UNSW), Ian Bryce, and Mike Paget.

You may be familiar with Prof Slezak from his very interesting debates with Dr William Lane Craig, which I’ll put below. So I’m hopeful for an entertaining evening.

Time: April 16, Monday 6.30-8.30pm
Location: Aerial Function Centre @ Building 10, Level 7

This is a ticketed event – $10. I have no idea why. Book your tickets at Eventbrite.


Peter Slezak videos …

I’m in the final stages of moving to a new position at Western Sydney University, so prepare for some more blogging soon about new and important things!

In the meantime, I’ll be speaking in Sydney tomorrow (Monday 19th March, 2018) at the Macarthur Astronomical Society.

Title: The Universe and Entropy, or The top 10 things to do before the heat death of the universe.
Time: Monday 19th March, 2018 at 7:30pm
Location: The small lecture theatre in Building 30 (School of Medicine) at Western Sydney University, Campbelltown Campus.
Public entry is by a gold coin donation

For the last 13.7 billion years, a variety of complex structures have assembled in the universe we see around us: nebulae, stars, planets, galaxies and more. But the infamous “second law of thermodynamics” says that the universe is winding down, moving from order to chaos.

How do these ideas fit together? Is the story of the universe order from chaos, or chaos from order?

The audiobook of “A Fortunate Universe: Life in a Finely Tuned Cosmos” has arrived!!!


It will be out on a few other platforms soon, we’re told by the distributor. We have absolutely no control over the price, by the way. It took an awfully long time to record and edit, but if you want to hear “A Fortunate Universe: Life in a Finely Tuned Cosmos” read in a charming Welsh accent, you’re in luck!

A note for any would-be audiobook producers: the YouTube channel Booth Junkie is your new best friend. Mike DelGaudio‘s tips for recording and producing, in particular the setup of Reaper, compression, EQ, gates and such, are priceless.

I’ve recently had my first philosophy paper published! It appears in the European Journal for Philosophy of Science, and is available online for free here (I think – tell me in the comments if it doesn’t work). [Edit: It doesn’t. Here’s the preprint.] Here’s the abstract:

Fine-tuning in physics and cosmology is often used as evidence that a theory is incomplete. For example, the parameters of the standard model of particle physics are “unnaturally” small (in various technical senses), which has driven much of the search for physics beyond the standard model. Of particular interest is the fine-tuning of the universe for life, which suggests that our universe’s ability to create physical life forms is improbable and in need of explanation, perhaps by a multiverse. This claim has been challenged on the grounds that the relevant probability measure cannot be justified because it cannot be normalized, and so small probabilities cannot be inferred. We show how fine-tuning can be formulated within the context of Bayesian theory testing (or model selection) in the physical sciences. The normalizability problem is seen to be a general problem for testing any theory with free parameters, and not a unique problem for fine-tuning. Physical theories in fact avoid such problems in one of two ways. Dimensional parameters are bounded by the Planck scale, avoiding troublesome infinities, and we are not compelled to assume that dimensionless parameters are distributed uniformly, which avoids non-normalizability.