Symmetry features

Scientists don’t yet know what dark matter is made of, but they are full of ideas.

Matter and antimatter behave differently. Scientists hope that investigating how might someday explain why we exist.

Although they might be invisible to the naked eye, contaminants less than a micron in size can ruin very sensitive experiments in particle physics.

Pick your favorites from among 24 photos taken during the Global Physics Photowalk.

New technology and new thinking are pushing the dark matter hunt to lower and lower masses.

Not only are we made of fundamental particles, we also produce them and are constantly bombarded by them throughout the day.

What topic in particle physics are you destined to study? Take the quiz to find out!

These physics-themed jack-o’-lanterns come with extra brains.

Symmetry sits down with Lindsay Olson as she wraps up a year of creating art inspired by particle physics.

Deep in the dense core of a black hole, protons and electrons are squeezed together to form neutrons, sending ghostly particles called neutrinos streaming out. Matter falls inward. In the textbook case, matter rebounds and erupts, leaving a neutron star. But sometimes, the supernova fails, and there’s no explosion; instead, a black hole is born. Scientists hope to use neutrino experiments to watch a black hole form.