NGC 6934 from Gemini North . ... Credit Copyright: Gemini Obs. NSF , U. Hawaii IfA Explanation: What's going on near the center of globular cluster NGC 6934? ... In infrared light , Gemini was able to use its adaptive optic mirrors to resolve stars even near the globular cluster's center. NGC 6934 is a 15 billion-year-old ball of hundreds of thousands of stars. Dating stars in ancient globular clusters like NGC 6934 provide valuable constraints on the minimum age of the universe . ...