Globular star cluster Messier 9. This image, taken by the Hubble Space Telescope, has at least 250,000 stars nestled in it. (from the book Hubble’s Universe: Greatest Discoveries and Latest Images)
Globular star cluster Messier 9. This image, taken by the Hubble Space Telescope, has at least 250,000 stars nestled in it. (from the book Hubble’s Universe: Greatest Discoveries and Latest Images)