Srsly? Several people asked me to comment on a paper that is hyped by phys.org as a test of quantum gravity . I’ll make this brief. Fi...

As you probably noticed from the uptick in blogposts, I’ve finished writing the book. The publication date is set for June 12, 2018. We have...

The recently reported gravitational wave detection , GW170817, was accompanied by electromagnetic radiation. Both signals arrived on Earth...

Galaxy slime. [ Img Src ] Physicists have gathered evidence that space-time can behave like a fluid. Mathematical evidence, that is, but...

I’ve had many interesting reactions to my recent post about inflation , this idea that the early universe expanded exponentially and thereby...

Living in a Bubble? [Image: YouTube ] We are made from stretched quantum fluctuations. At least that’s cosmologists’ currently most po...

“Do you hope to win a Nobel Prize?” asked an elderly man who had come to shake my hand after the lecture. I laughed, but he was serious. May...

Dear Chris, The standard model of particle physics contains two different types of particles. There are the fermions, which make up matter...

I made some drawings recently. For no particular purpose, really, other than to distract myself. And here is the joker: ...

I’m still writing on the book. After not much happened for almost a year, my publisher now rather suddenly asked for the final version of th...

I'm in Switzerland this week, for a conference on " Thinking about Space and Time: 100 Years of Applying and Interpreting General R...

Something else I made for the book but later removed. (Click to enlarge.)

Have you heard of the principle of least action? It’s the most important idea in physics, and it underlies everything. According to this pri...

I thought that anti-vaxxers are a US-phenomenon, certainly not to be found among the dutiful Germans. Well, I was wrong. The WHO estimates o...

Not how it works. It’s tough to wrap your head around four dimensions. We have known that the universe expands since the 1930s, but wh...

Chairs. [ Image: Verco ] That leaked internal memo from James Damore at Google ? The one that says one shouldn’t expect employees in all...

Cables under my desk. One of the unlikelier fights I picked while blogging was with an MIT group that aimed to wirelessly power devices ...