A new kind of plasma accelerator has cleared a hurdle that has dogged the field for decades, lifting electron energy and beam ...

Liquids and solutions may look simple, but on the molecular scale they are constantly shifting and reorganizing. When sugar dissolves in water, each sugar molecule quickly becomes surrounded by fast ...

Superionic water—the hot, black and strangely conductive form of ice that exists in the center of distant planets—was ...

For a quarter century, cosmology has rested on a simple but audacious idea: that a fixed “cosmological constant” drives the ...

Nearly everything in the universe is made of mysterious dark matter and dark energy, yet we can’t see either of them directly ...

The scientists behind the MAGIS-100 experiment aim to use state-of-the-art lasers to shed light on ultralight dark matter.

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