Astronomers may have found the long-missing half of the universe's regular matter—and it appears to have been right under our ...

Dark matter is hypothesized to outweigh "ordinary matter" in the universe by a factor of five. That means all the stuff we ...

For decades, scientists have known that ordinary matter — everything made of atoms — accounts for just 15% of the universe’s ...

A new cosmic model suggests that singularities could briefly pop into existence, spewing matter and energy into the cosmos, negating the need for dark energy and dark matter.

Intriguing signs from CERN hint at a never-before-seen form of matter – one that could be the tiniest particle cluster ever ...

After more than a year searching for companies that could produce enriched uranium for the growing nuclear power sector, ...