---

• n  (cosmology) a hypothetical form of matter that is believed to make up 90 percent of the universe; it is invisible (does not absorb or emit light) and does not collide with atomic particles but exerts gravitational force

News & Articles

---

• You're Interacting With Dark Matter Right Now
  Shutterstock/ Paul Fleet Here's a little experiment. Hold up your hand. Now put it back down. In that window of time, your hand somehow interacted with dark matter -- the mysterious stuff that comprises ...
  June 29, 2013 - The Atlantic via Yahoo! Finance
• An “Elemental” Explanation of Dark Matter
  Atoms, string theory, dark matter, dark energy… there’s an awful lot about the Universe that might make sense on paper (to physicists, anyway) but is extremely difficult to detect and measure, at least with the technology available today. But at the core of science is observation, and what’s been observed of the Universe so far [...]
  June 28, 2013 - Universe Today