Space and time seem like two completely different ideas, but Einstein showed they are interlinked in what is known as ...

As one star spins another out of view for the next century and a half, astronomers use it to weight an incredible binary system. Share on Facebook (opens in a new window) Share on X (opens in a new ...

In a dual set of papers published in Science last week, an international group of researchers presented an experiment which used relativistic time dilation to measure the curvature of spacetime. The ...

Disclaimer: I am very much a physics noob. This might be a nonsensical question. That spacetime can be curved or warped is something I can grasp, but I keep getting stuck on one specific aspect of how ...

A paper appeared in Classical and Quantum Gravity. Co-author, Associate Professor of the Department of Relativity Theory and Gravity of KFU Alexei Zayats explains, "Light is distributed linearly in ...

Today, let's talk about something mysterious and really cool — the ideas that old man Einstein came up with over a hundred years ago are now actually becoming visible! Isn't that strange?

Oftentimes, we think of space as an endless, mostly empty vacuum, a silent backdrop where planets, stars, and galaxies play out their dance. We also think of time as something separate, a steady ...

But come to think of it, I don't know that we can say that there's any such thing as spacetime inside a black hole. When a black hole forms from stellar core compaction, there is a huge amount of ...