The four awards, totaling more than $4.8 million, will involve faculty and students from nearly every UC campus

International collaboration, including SLAC scientists, begins detailed studies of mysterious particles with new experiment

Dark matter may find it tougher to hide in our universe.

Astronomers using observations from NASA's Hubble Space Telescope and Chandra X-ray Observatory have found that dark matter does not slow down when colliding with each other. This means that it interacts with itself even less than previously thought. Researchers say this finding narrows down the options for what this mysterious substance might be.

Data from the Relativistic Heavy Ion Collider (RHIC) and other experiments nearly rule out role of 'dark photons' as an explanation for the 'g-2' anomaly.

In a laboratory under a mountain 80 miles east of Rome this fall, a Princeton-led international team switched on a new experiment aimed at finding a mysterious substance that makes up a quarter of the universe but has never been seen.

Dark matter, believed by physicists to outweigh all the normal matter in the universe by more than five to one, is by definition invisible. But certain features associated with dark matter might be detectable, according to some of the many competing theories describing this elusive matter.