Faster-than-light (FTL) travel is a staple of sci-fi, but now astrophysicist Erik Lentz has outlined a theoretical design that could allow FTL travel based on conventional physics.

Time travel movies have different rules about what happens when you start messing around with the timeline.

Surprisingly, a bridge between two distant points in space and time fits into current physics models, although no evidence that they do exist has ever been found.

We’re all too familiar with the inexorable march of time, but why exactly it flows in one direction remains a mystery of physics.

Scientists have created a new class of laser beam that appears to violate long-held laws of light physics.

Last year scientists detected gravitational waves from what appeared to be the most massive black hole collision ever recorded, but there's an alternative explanation.

We’re quickly learning more about time crystals, strange phases of matter that appear to break time-translation symmetry – something that was thought impossible until recently.

Scientists have estimated the total amount of matter in the universe, using a new, more precise method.

Atomic clocks are the most precise timekeepers we have today, with the best ones keeping time to within one second in 15 billion years. But there’s always room for improvement ...