One hundred years ago today, Albert Einstein finished a scientific paper that would change the world. His radical insight into the nature of light would help transform Einstein from an unknown patent ...

The constancy of the speed of light is a pillar of modern physics, but questions persist about its absolute universality.

Researchers confirm Bohr's predictions over Einstein's theory in a groundbreaking one-atom experiment, revealing insights ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Albert Einstein's stimulated emission theory has been validated by large amounts of light, but never ...

Einstein was enthralled by light. Even as a teenager he pondered its properties. At 16, he imagined what it would be like to chase, catch up with, and ride on a light beam. When he started thinking ...

For the first time ever, researchers have been able to examine very compact structures of star clusters inside galaxies, thanks to the James Webb Space Telescope (JWST). The research was recently ...