For more than a century, the double-slit experiment has been the sharpest test of what reality is made of, and of whether ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

The rapid acceleration of the universe’s expansion continues to challenge our understanding of fundamental physics. Why the ...

Imagining every drop of Earth’s water hurled into the Sun sounds like a last-ditch cosmic fire extinguisher, but the physics ...