When atoms collide, their exact structure—for example, the number of electrons they have or even the quantum spin of their ...

Researchers have announced results from a new search at the European X-ray Free Electron Laser (European XFEL) Facility at ...

Atomic clocks are more accurate than those used to define the second, suggesting the definition might need to change ...

A strange molecular pattern, first mistaken for an error, led researchers to an unexpected discovery: molecules forming ...