For more than a century, modern physics has rested on two towering frameworks that do not quite agree with each other.

Mind = blown.

The universe comes with a built‑in speed cap, a hard limit that shapes everything from how stars shine to how cause and ...

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a ...

Lorentzian geometry forms the mathematical cornerstone of modern spacetime theory by providing a framework in which the causal structure and metric properties of the universe can be rigorously ...

The original version of this story appeared in Quanta Magazine. At the beginning of time and the center of every black hole lies a point of infinite density called a singularity. To explore these ...