TOPIC

Particle physics.

Stories tagged #Particle physics

What Is Dark Matter?

Galaxies spin too fast and light bends too much, so something unseen seems to be out there, but nobody yet knows what it is.

Open question6 min read

Shadows, stretching space and a famous neutrino scare all seem to break the cosmic speed limit. Here is why the limit still stands.

Established6 min read

The Big Bang should have left an almost empty universe. A tiny surplus of matter built everything we know, and nobody yet knows why.

Open question6 min read

Physicists have merged forces of nature before. Gravity is the holdout, and no candidate theory of everything has yet passed a decisive test.

Open question6 min read

OriginsExplainer

An unseen direction in space is a serious possibility in some models. What would it change in a detector, and what would count as evidence?

3 min read