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Messier 4
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<p>Messier 4 or M4 (also known as NGC 6121 or the Spider Globular Cluster) is a <a href="/facts/Globular_cluster/FL0EERJU">globular cluster</a> in the <a href="/facts/Constellation/nBQqgW8A">constellation</a> of <a href="/facts/Scorpius/ddxFGlK0">Scorpius</a>. It was discovered by <a href="/facts/Philippe_Loys_de_Ch%25C3%25A9seaux/FSYoegn4">Philippe Loys de Chéseaux</a> in 1745 and catalogued by <a href="/facts/Charles_Messier/dTokW7Yy">Charles Messier</a> in 1764. It was the first globular cluster in which individual <a href="/facts/Star/euBFuo07">stars</a> were resolved. </p>