Figure 18-19: R I V U X G
A Mature Star Cluster NGC 3603 is one the closest star clusters at only 20,000 ly away. Star formation has ended and ultraviolet light from its stars power the largest visible reddish H II region in our Galaxy.
A Mature Star Cluster NGC 3603 is one the closest star clusters at only 20,000 ly away. Star formation has ended and ultraviolet light from its stars power the largest visible reddish H II region in our Galaxy.
(NASA/Hubble Space Telescope Collection)