Few ideas in modern science have reshaped our understanding of reality more profoundly than space-time—the interwoven fabric ...

Taken from the 25th anniversary issue of Physics World, this article examines one of the five biggest unanswered questions in physics as selected by the magazine’s editors Scientists and philosophers ...

In physics, the treatment of time is a central issue. In physics, the treatment of time is a central issue. It has been treated as a question of geometry. One can measure time and treat it as a ...

This persnickety number determines the strength of magnetic fields. It figures in everything from motors and generators to ...

Physicist Max Tegmark says that time is still one of the biggest mysteries in physics.

Spacetime may emerge from a more fundamental reality. Figuring out how could unlock the most urgent goal in physics—a quantum theory of gravity ...

But it is boring in comparison to the larger questions about space and time. Discussing what space and time are and where they came from is now within the realm of particle physics.

Neils Bohr once said “Physics concerns what we can say about Nature." Neils Bohr said, “It is wrong to think that the task of physics is to find out how Nature is. Physics concerns what we can ...

A billion billion attoseconds just passed while you read this. Why is such a tiny timeframe crucial to this year's Nobel physics prize winners?