It’s a powerful technique, but small uncertainties at each step can add up, something critics argue may be behind the Hubble tension. The new study bypasses this entire ladder using a method called ...

Physicists have nailed a fiendishly difficult measurement — the mass of the fundamental particle the W boson. The result, from the CMS experiment at the Large Hadron Collider (LHC), is in line with ...

Electrons are really, really round. A new measurement confirms the subatomic particle’s spherical shape to a record level of exactness, physicists report in the July 7 Science. That near-perfect ...

Robust state Illustration of how discrete Fourier transform (DFT) circuits are used to achieve the entanglement measurement of the W state. (Courtesy: KyotoU/Takeuchi lab) Imagine two particles so ...

Devices could eliminate the strong magnetic fields currently required to define the standard unit of resistance ...

Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...

The original version of this story appeared in Quanta Magazine. If there’s one law of physics that seems easy to grasp, it’s the second law of thermodynamics: Heat flows spontaneously from hotter ...

The deviance of a tiny particle called the muon might prove that one of the most well-tested theories in physics is incomplete. By Katrina Miller Katrina Miller, a science reporter, recently earned a ...