Ultradiffuse galaxies (IMAGE) University of California - Riverside Caption On the left, one of the ultra-diffuse galaxies that was analyzed in the simulation. On the right, the image of the DF2 galaxy, which is almost transparent. Credit ESA/Hubble. Usage Restrictions None. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.