Star clusters
White Dwarf Stars in M4
August 28, 1995 · ESA/Hubble · M 4 , Messier 4 , NGC 6121 · Scorpius
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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.
