Messier 4
Messier 4 o M4 (etiam deignate NGC 6121) es un racemo globular in le constellation de Scorpion. Illo era discoperite per Phillipe Loys de Chéseaux in 1746 e catalogate per Charles Messier in 1764. Illo era le prime racemo globular in le qual stellas individual era resolvite.

Ligamines externe 
 Paginas Messier de SEDS: de  en fr it
  M4, Galactic Globular Clusters Database page

Objectos Messier
Racemos globular
Constellation de Scorpion