The core of globular cluster 47 Tucanae is home to many blue stragglers, rejuvenated stars that glow with the blue light of young stars. This ground-based telescope image shows the entire crowded core of 47 Tucanae, located 15, 000 light-years away in the constellation Tucana.

Credit: Rex Saffer (Villanova University) and Dave Zurek (STScI), and NASA/ESA