Globular Cluster M4
![](https://cdn.sci.esa.int/documents/34247/35306/1567220802945-i_screenimage_29973.jpg)
Depicts: M4, NGC 6121
Copyright: NOAO/AURA/NSF
The cluster hosts some highly interesting white dwarfs that can be used to age-date the Universe.
Last Update: 1 September 2019
The cluster hosts some highly interesting white dwarfs that can be used to age-date the Universe.