Modern cosmology assumes dark matter exists. But what makes us so certain that dark matter is the answer—and what if we're wrong?

Scientists have developed a new technique that could turn black hole collisions into cosmic detectors for dark matter, ...

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 ...

Something invisible holds the universe intact. It outweighs everything you can see—every star, every gas cloud, every galaxy—by a factor of five. We call it dark matter, and for decades, the standard, ...

In the early 1930s, Swiss astronomer Fritz Zwicky observed galaxies in space moving faster than their mass should allow, prompting him to infer the presence of some invisible scaffolding—dark ...