Blog

Black Holes, White Holes & Other Universes

A new video from Veritasium exploring our understanding of black holes, with a bit of me in there.

What did James Webb see at the beginning of time?

A new video for The History of the Universe

The Infinities of the Universe

I wrote a short essay on the Infinities of the Universe. You can read it here

Back to the trickiest problem....

Have you ever noticed when Hollywood seems to produce two similar movies at the same time? Armageddon and Deep Impact. Mission to Mars...

But did time really run more slowly?

Recently, there was a little media buzz about one of my papers. With Brendon Brewer at the University of Auckland, I identified the time...

The Trickiest Problem in Probability

Our old friend Veritasium posted this probability problem a while ago on what is apparently the trickiest problem of them all. In the...

TRUE Limits of Humanity

I don't have to tell you that there are good and bad science channels on youtube. Kurzgesagt is one of my favourites, always informative...

Discovery of the Dulais Stream

Late in 2022 (seems like so long ago) I discovered a new stream of stars in the Andromeda Galaxy. This structure, which we detect in the...

How Does Light Actually Work?

Oh my - I've realised that I have neglected this blog. This year has zipped along at high speed, and we are already into the second half....

Pollock Memorial Lecture

My recent Pollock Memorial Lecture - "Most of our universe is missing! Adventures in the dark side of the cosmos" is now available on...

The Hidden Rules of the Universe

I scripted a new video for The Entire History of the Universe on the importance of symmetry in our understanding of the universe.

Where did the universe come from?

I chatted with Reason with Science about all kinds of things cosmological!

Why Fine-Tuning is Real

I spoke with Adherent Apologetics about fine-tuning.

Einstein Lecture 2022

Sorry for the break - teaching etc - but a few things have happened. With Tara Murphy, I gave the 2022 Einstein Lecture on gravitational...

Just what are space and time?

A new video I scripted for The History of the Universe

Seeing Red: Was Arp kicked out of astronomy?

A new episode of Alas Lewis and Barnes, exploring scientific controversies!

The Hunt for Dark Matter

I was interviewed by Veritasium (Derek Muller) in his recent video on his hunt for dark matter. Check out the video here:

The Physics & Philosophy of Fine-Tuning

A two-hour discussion of one of the deep questions of the universe.

The quantum of cosmos future

A new discussion on the Quantum of Cosmos Future over at Arts Wednesday. Just what will tomorrow bring? Let's use physics to find out!

How many multiverses are there?

In a new video by the History of the Universe, I explore the possible multiverses that might be out there!