Hubble Spots Bizarre Galaxy That Appears to Be 99.9 Percent Dark Matter

"To be technically correct, CDG-2 is an almost-dark galaxy. But the importance of CDG-2 is that it nudges us much closer to getting to that truly dark regime, while previously we did not think a galaxy this faint could exist."

"The universe is overrun with dark matter, outweighing the ordinary stuff that stars and planets are made of five-to-one. Using the stalwart Hubble Space Telescope, a team of astronomers have found a galaxy 300 million light away that appears to be made of at least 99.9 percent dark matter."

"In an essentially empty realm, dark matter is what helps keep these shiny stars glued together. Globular clusters are tightly packed, spherical conglomerations of old stars that are basically the relics of the first generation of star formation."

Dark matter outweighs ordinary matter in the universe by five-to-one, with some cosmic regions containing even higher concentrations. Using the Hubble Space Telescope, Euclid, and the Subaru Telescope, astronomers identified galaxy CDG-2 located 300 million light-years away, composed of at least 99.9 percent dark matter and barely visible to observation. This discovery represents one of the most dark matter-heavy galaxies ever detected and brings astronomers closer to finding theoretical dark galaxies—objects theorized to contain few or no stars. Researchers located the galaxy by identifying globular clusters, which are ancient, tightly packed spheres of old stars held together by dark matter's gravitational influence.

Read at Futurism