Cluster’s Advanced Age in Razor-sharp Focus

Gemini Observatory GeMS image of NGC 6624 revealing individual stars to the cluster’s core. The Cluster’s age as determined with this study is between 11.5-12.5 billion years old, which confirms that it formed when the Universe was only a fraction of its current age of about 13.8 billion years. Composite color image by Travis Rector, University of Alaska Anchorage.