Dark Matter Contest Enlists the Masses

This Hubble Space Telescope composite image shows a ghostly "ring" of dark matter in the galaxy cluster Cl 0024+17.
(Image credit: NASA, ESA, M.J. Jee and H. Ford (Johns Hopkins University))

The nature of dark matter has stumped astronomers for decades, so now they're turning to the masses for help.

Scientists have launched a public competition in an attempt to better understand dark matter, the mysterious stuff thought to make up 83 percent of all matter in the universe (the rest is the "normal" matter that makes up everything we can see and touch). Despite its prevalence, dark matter cannot be detected directly, only sensed through its gravitational pull.

Space.com Staff
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