哈勃图像: 球状星团NGC 6355
2023年1月30日 Globular Star Cluster NGC 6355 from Hubble Image Credit: ESA/Hubble & NASA, E. Noyola, R. Cohen Explanation: Globular clusters once ruled the Milky Way. Back in the old days, back when our Galaxy first formed, perhaps thousands of globular clusters roamed our Galaxy. Today, there are […]