Is dark matter `fuzzy`?
(PHYSorg.com Space & Earth)

Astronomers have used data from NASA`s Chandra X-ray Observatory to study the properties of dark matter, the mysterious, invisible substance that makes up a majority of matter in the universe. The study, which involves 13 galaxy clusters, explores the possibility that dark matter may be more `fuzzy` than `cold,` perhaps even adding to the complexity surrounding this cosmic conundrum.