Astronomers have detected a ghostly galaxy that is almost completely made of dark matter. The faint object was revealed by just four globular star clusters hiding in the Perseus cluster. While most galaxies blaze with billions of stars, a rare few are so faint they are barely detectable. These low-surface-brightness galaxies contain very few stars […]Space,Astronomy,Hubble Space Telescope,NASA,NASA Goddard Space Flight Center#Ghost #Galaxy #Dark #Matter #Discovered #Million #Light #Years1772451758
