Astronomers Discover Potential Dark Galaxy Rich in Dark Matter

A team of astronomers has identified a nearly invisible galaxy named Candidate Dark Galaxy-2 (CDG-2) using the Hubble Space Telescope. This galaxy, located approximately 300 million light-years from Earth, is believed to be composed of over 99.9% dark matter, making it one of the most dark matter-dominant galaxies discovered to date. The discovery is significant as it enhances understanding of dark matter, which constitutes about five times more of the universe than visible matter. Researchers utilized data from multiple telescopes and a novel method focused on globular clusters to detect this faint galaxy. Further observations, potentially with the James Webb Space Telescope, are necessary to confirm its properties and dark matter content.

Key Details: • CDG-2 is located about 300 million light-years from Earth. • The galaxy is estimated to have only 0.005% of the brightness of the Milky Way. • Further observations are needed, possibly using the James Webb Space Telescope.