The neutrino “fog” is beginning to materialize. Lightweight subatomic particles called neutrinos have begun elbowing their way into the data of experiments not designed to spot them. Two experiments, ...

Dark matter is supposed to be everywhere, threaded through the Milky Way and outnumbering ordinary matter by a wide margin.

Kavli IPMU's Shigeki Matsumoto and Jie Sheng have shown torsion-balance experiments — precision instruments originally built ...

The nature of dark matter is one of the leading mysteries in modern astronomy. In fact, the name "dark matter" is essentially a placeholder for something astronomers know is there but can't yet ...