New results from the world's most sensitive dark matter detector put the best-ever limits on particles called WIMPs, a leading candidate for what makes up our universe's invisible mass. Figuring out ...

UC Santa Cruz physicist Stefano Profumo has put forward two imaginative but scientifically grounded theories that may help solve one of the biggest mysteries in physics: the origin of dark matter. In ...

Nearly half of the universe’s ordinary matter has been hiding — until now. Bursts of radio waves have illuminated the whereabouts of all ordinary matter, revealing its distribution between, around and ...

If imitation is a form of flattery, then scientists are enamored with the axion. The hypothetical subatomic particle has long eluded scientists. But it’s now been conjured up in imitation form within ...