There is a lot of matter in our galaxy that we can’t see. It’s called dark matter. Have you ever looked up at the night sky and thought it looks like a lot of empty space? Turns out, it’s not empty ...

The Hubble Space Telescope has discovered a galaxy in the the Perseus galaxy cluster that is "composed of 99% dark matter," according to NASA's Goddard Space Flight Center. Credit: NASA's Goddard ...

This video explores the enigma of dark matter, an elusive substance believed to make up most of the universe's matter. While ...

Dark matter is an elusive form of matter that almost never emits, absorbs or reflects light, while only weakly interacting with regular matter. These properties make it very difficult to detect using ...

it's time to talk about Dark Matter once again mostly because we have some really exciting observational evidence discovered in a distant cluster along with a somewhat intriguing study that tries to ...

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John Leeson in front of the Dows Observatory and Preserve on Thursday, July 19, 2012. The observatory will be hosting a public event this Saturday about dark matter in space. (SourceMedia Group ...

Researchers may have identified what could be a compelling clue in the ongoing hunt to prove the existence of dark matter. A mysterious diffuse glow of gamma rays near the center of the Milky Way has ...

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

Dark matter is some kind of substance that has gravity—it holds galaxies together—yet cannot be directly seen with any instrument yet created. We know it’s out there because of the effects it has on ...