Figure 3 (IMAGE) Tohoku University Caption The area observed by the HSC-SSP (area surrounded by red lines). Previously known satellite galaxies are indicated by black squares, and newly discovered satellite galaxies are indicated by white triangles and stars Credit NAOJ/Tohoku University Usage Restrictions Reporters may use freely these materials in news coverage with appropriate credit information. License Licensed 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.