球状星团M53的蓝掉队星
2021年02月07日 Blue Straggler Stars in Globular Cluster M53 Image Credit: ESA/Hubble, NASA Explanation: If our Sun were part of this star cluster, the night sky would glow like a jewel box of bright stars. This cluster, known as M53 and cataloged as NGC 5024, is one of about 250 globular clusters that survive in our Galaxy. Most of the stars in M53 are older an...