If findings are correct, astronomer Tomonori Totani told Newsweek, this may finally solve "the greatest mystery in cosmology.

Welcome to the age of precision cosmology, a scientific era in which astronomers and physicists have measured almost everything about our universe—except for its deepest mysteries: dark matter and ...

We can't see dark matter directly, so studying it pushes the boundaries of our creativity as scientists. How exciting, says ...

Unexplained gamma ray radiation coming from the edge of the Milky Way galaxy could be produced by self-annihilating dark matter particles – but the idea requires further investigation ...