... Blue Stagglers in Globular Clusters . ... Circled are mysterious stars called " blue stragglers. Stars as bright and blue as blue stragglers live short lives , much shorter than the age of the host globular cluster itself. But this contradicts evidence that globular cluster stars formed all at once. ... Publications with keywords: globular cluster - blue stragglers . Publications with words: globular cluster - blue stragglers . ... Blue Straggler Stars in Globular Cluster M53 . ...