A big loose ball of stars

Open cluster NGC 6791
#astrophotography #seestar #ngc6791

Image of NGC 6791, an ancient and unusually metal-rich open star cluster. Thousands of stars, approximately 8 billion years old, are densely packed, defying typical metallicity expectations for stars of this age. This intriguing cluster presents a cosmic puzzle regarding stellar evolution within galactic centers.

Astronomy Picture from 12/01/2000

NGC 6791: An Old, Large Open Cluster

Source: https://apod.nasa.gov/apod/ap000112.html


#NGC6791 #OpenStarCluster #CosmicMystery #StellarEvolution #Astronomy #Astrophysics #Space #Stars #MilkyWay #Metallicity