Everything we see around us, from the ground beneath our feet to the most remote galaxies, is made of matter. For scientists, that has long posed a problem: According to physicists’ best current ...

For more than a century, physicists have suspected that the familiar three dimensions of space might be only a small slice of ...

They're tiny, invisible, and travel across the universe. And trillions of them just flew through your body. What are they? Neutrinos ‒ and scientists Wednesday announced the discovery of the most ...

Astronomers around the world are in a bit of a tizzy because they can't seem to agree about how fast the universe is expanding. Ever since our universe emerged from an explosion of a tiny speck of ...

Astronomers at NASA's Chandra X-ray Observatory have found evidence of a particle jet coming from a supermassive black hole in the early universe. The source of the X-ray jet is a quasar, or a ...

Particle accelerators have been responsible for revolutionary scientific breakthroughs, but the tech behind them isn't as ...

UChicago physics Prof. Bonnie Fleming, who is also the chief research officer at Fermi National Accelerator Laboratory, is ...

Deep in the heart of the matter, some numbers don't add up. For example, while protons and neutrons are made of quarks, nature's fundamental building blocks bound together by gluons, their masses are ...