Add Yahoo as a preferred source to see more of our stories on Google. Dark matter may have started hot and cooled during reheating after the Big Bang. (CREDIT: NASA / Goddard Space Flight Center ...

Add Yahoo as a preferred source to see more of our stories on Google. If dark matter particles decay, then scientists could hunt for signs of this process, including X-ray or gamma-ray radiation or ...

Dark matter is one of the biggest puzzles in science. Although it makes up about 85 percent of all matter in the universe, it has never been directly observed. You can’t see it, touch it, or hold it ...

The universe has cooked up all sorts of bizarre and beautiful forms of matter, from blazing stars to purring cats, out of just three basic ingredients. Electrons and two types of quarks, dubbed “up” ...

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 ...

A black hole is more than just a region of space where nothing escapes. It can also become a powerful cosmic engine. When matter spirals inward, falling into its grasp, the black hole doesn't just ...

What if I told you that while you can't see dark matter, maybe you can hear it? I know, I know, it sounds crazy…and it is crazy. But it's crazy enough that it just might work. It's a real life ...

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 ...

Dark matter remains one of the biggest mysteries in fundamental physics. Many theoretical proposals (axions, WIMPs) and 40 years of extensive experimental searches have failed to provide any ...

For more than a decade, NASA’s Fermi Gamma-ray Space Telescope has quietly mapped the high-energy sky, searching for subtle patterns in the cosmic glow. Now a new analysis of its data points to a ...

The universe is packed with riddles, but few are as stubborn or as fascinating as dark matter. First proposed in 1933 by astronomer Fritz Zwicky, this elusive substance refuses to play by the rules: ...