Multiverse

Several branches of modern physics, including quantum theory and cosmology, suggest our universe may be just one of many

This enormous structure could help explain processes close to the dawn of time—or it could be a random cosmic fluke

Using concepts from theoretical physics and explorations of the multiverse, here’s what we can understand about Barbie and the world she lives in

Solving a notorious quantum quandary could require abandoning some of science’s most cherished assumptions about the physical world

For centuries, scientific discoveries have suggested humanity occupies no privileged place in the universe. Now, however, studies of worlds beyond our solar system could place meaningful new limits on our existential mediocrity

Elegant experiments with entangled light have laid bare a profound mystery at the heart of reality

Developing quantum-gravity technologies may elevate us to a “class A” civilization, capable of creating a baby universe

The blog’s author reflects as nine years of writing undergo an evolutionary change

If reality is manufactured it’s time to lodge some complaints

The Life, Unbounded column reaches a milestone and reflects on seven years of astrobiology, astrophysics and wonderfully crazy stuff

The northern summer brings some intriguing research and exciting developments

Living on a small planet in a big universe exposes us to all manner of existential problems, but what are the worst, and what are the weirdest?