There are many types of spacetime within physics, the same way there are infinite dimensions in math. Some spacetimes are ...

Quasicrystals are orderly structures that never repeat. Scientists just showed they can exist in space and time.

The shape of the cosmos depends on a balance of two competing forces: the pull of gravity and the expansion driven by dark ...

Wormholes are often imagined as tunnels through space or time — shortcuts across the universe. But this image rests on a misunderstanding of work by physicists Albert Einstein and Nathan Rosen. In ...

The puzzle Einstein and Rosen were addressing was never about space travel, but about how quantum fields behave in curved spacetime. I ...

For a generation, cosmologists have worked with a simple story: the universe is not only expanding, it is expanding faster and faster under the steady push of dark energy. A growing body of fresh data ...