Artist's impression of blue stragglers
Date: 09 September 2019
Satellite: Hubble Space Telescope
Copyright: ESA/Hubble & NASA, L. Calçada, CC BY 4.0
Blue straggler stars are blue, bright stars, with a higher mass than the average for a cluster, and they are expected to sink towards the centre of a star cluster over time. Those closest to the cluster core are the first to migrate inwards, with more distant blue stragglers progressively moving inwards over time.
This work is licensed under a Creative Commons Attribution 4.0 International License. 
Last Update: 11 September 2019
