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

Research published Tuesday by a Japanese astrophysicist says gamma rays may have been generated by the collision of dark ...

Everything you see around you—your phone, your cat, the Earth, the stars—makes up just 15% of the mass in the universe. The remaining 85% is a ghost. We can’t see it, touch it, or sense it in any way.