City of Stars - 47 Tucanae (WFPC-2 Image)
Depicts: 47 Tucanae, NGC 104
Copyright: Ron Gilliland (Space Telescope Science Institute) and NASA
The picture, taken by the Wide Field and Planetary Camera 2, depicts the stars' natural colors and tells scientists about their composition and age. For example, the red stars denote bright red giants nearing the end of their lives; the more common yellow stars are similar to our middle-aged Sun.
Last Update: 1 September 2019
