... Dark Matter Ring Modeled around Galaxy Cluster CL0024 17 . ... A new observation of gravitationally magnified faint galaxies far in the distance behind a massive cluster of galaxies is shedding new dark on the subject. ... To help find out, astronomers took a deep image in ultraviolet light of the sprawling spiral with the Earth-orbiting Galex telescope. ... When passing Earth on your way to Jupiter, what should you look for? ... The Cats Eye Nebula from Hubble . ... A Dark Sky over Death Valley . ...