Hubble Discovers Ghost Galaxy CDG-2: 99% Dark Matter, Few Stars

• Hubble and Euclid telescopes jointly discovered CDG-2, a galaxy composed almost entirely of dark matter.
• CDG-2, located 245 million light-years away, is a 'ghost galaxy' with negligible normal matter and very few stars.
• Scientists estimate 99% of CDG-2's mass is dark matter, a significant deviation from the typical 5:1 dark-to-normal matter ratio.
• Dark matter was detected by observing the peculiar behavior of globular clusters, held together by an invisible gravitational force.
• Researchers hypothesize CDG-2 lost its stars due to gravitational collisions with larger galaxies, leaving behind a dark matter skeleton.