White Dwarf Stars in M4
Depicts: M4, NGC 6121
Copyright: Kitt Peak National Observatory 0.9-meter telescope, National Optical Astronomy Observatories; courtesy M. Bolte (Universityof California, Santa Cruz)
A view of globular cluster M4 (fourth object in the Messier
catalog of star clusters and nebulae). The nearest globular cluster to Earth (7,000 light-years away), and containing more than 100,000 stars, M4 was the target of a Hubble Space Telescope search for white dwarf stars.
Last Update: 1 September 2019