Physics

Physicists saw a black hole for the first time, debated the expansion rate of the universe, pondered the origin of time and modeled the end of clouds.

Snow crystals come in two main types. The “pope” of snowflake physics has a new theory that explains why.

Researchers have spent centuries looking for a scenario in which the Euler fluid equations fail. Now a mathematician has finally found one.

A study challenged the evidence for the mysterious antigravitational force known as dark energy. Then cosmologists shot back.

After a space telescope disintegrated, astrophysicists had little hope of understanding how supermassive black holes agitate giant galaxies. Then they invented a hack.

By considering simple symmetries, physicists working on the “bootstrap” can rediscover the basic form of the known forces that shape the universe.

Many of us are drawn to beauty in mathematics. But is that the way nature really works?

For the first time, physicists have calculated exactly what kind of singularity lies at the center of a realistic black hole.

Physicists have long searched for hypothesized dark matter particles called WIMPs. Now, focus may be shifting to the axion — an ultra-lightweight particle whose existence would solve two mysteries at once.