Something is out there. As far as scientists know, just 15% of the matter in the universe is the ordinary kind we can see.

A team of young scientists paused their new physics searches to develop an innovative machine-learning tool, which is now helping them narrow in on a rare and messy decay of the Higgs boson. Physicist ...

The CMS and ATLAS experiments at CERN’s Large Hadron Collider have observed an unforeseen feature in the behaviour of top quarks that suggests that these heaviest of all elementary particles form a ...

The LHCb experiment at CERN has revealed a fundamental asymmetry in the behavior of particles called baryons. “The reason why it took longer to observe CP violation in baryons than in mesons is down ...

Writer Chetna Krishna follows CERN’s “coolest” transport, a test of a system to ship stored antimatter across the continent. I reach CERN’s Antimatter Factory at 8 a.m. sharp. I’m here at the ...

The Planck scale sets the universe’s minimum limit, beyond which the laws of physics break. In the late 1890s, physicist Max Planck proposed a set of units to simplify the expression of physics laws.

Meet the short-lived particle that helps the sun shine. Visible matter is made from only a handful of particles, but many more are behind the scenes, affecting what those matter particles do. The W ...

Physics may seem like its own world, but different sectors using machine learning are all part of the same universe. In 2017, Savannah Thais attended the NeurIPS machine-learning conference in Long ...

Scientists on the ATLAS collaboration performed the highest-energy measurement of quantum entanglement. On the smallest level, the universe operates in such a bizarre way that even Albert Einstein had ...

Electromagnetism and the weak nuclear force are two distinct fundamental forces. That wasn’t always the case. How many fundamental forces are there in our universe? For particle physicists, answering ...

In the 1900s, Albert Einstein unified the concepts of space and time, giving us a useful new way to picture the universe. At the start of the 20th century, physicists had a problem: The speed of light ...

Scientists are championing a relatively new technique as a method to understand the structure of the early universe in three dimensions. With enough time and magnifying power, a telescope can gather ...