Lightspeed travel is a popular concept in sci-fi and pop culture, but it's not a technology we are likely to see anytime soon ...

This book surveys key developments and open issues for graduate students and researchers. Using a relativistic geometric approach, it focuses on the general concepts and relations that underpin the ...

The theory of special relativity is rife with counterintuitive and surprising effects, the most famous of which are length ...

A team of physicists at the Brookhaven National Laboratory’s Relativistic Heavy Ion Collider (RHIC) has achieved a ...

New research has unveiled a previously unacknowledged effect of Einstein’s relativity theory similar to time dialtion and ...

A method to take snapshots of exploding nuclei could hold clues about the fundamental properties of gold, uranium and other ...

FOR THE discerning timekeeper, only an atomic clock will do. Whereas the best quartz timepieces will lose a millisecond every ...

"Killer electrons" that travel at nearly light speed inside Earth's Van Allen belts—the zone that surrounds the planet and ...

Scientists have demonstrated a new way to use high-energy particle smashups at the Relativistic Heavy Ion Collider (RHIC) to reveal subtle details about the shapes of atomic nuclei. The method is ...

Astronomers have performed a comprehensive multiwavelength study of an extremely variable blazar known as AO 0235+164.

How did supermassive black holes get big so fast? Astrophysicist Souphie Koudmani tells us how she and her colleagues are finding out.