Messier 52 is a rich open cluster embedded in the crowded star fields of Cassiopeia. Its members formed together from the same cloud and now travel through the Milky Way as a loose stellar family.

The cluster is roughly 5,000 light-years away and around 120 million years old, although heavy and uneven foreground dust has made its distance unusually difficult to pin down. Hot blue-white stars mingle with warmer evolved members, creating the color contrast visible in this photograph.

M52 sits near the Bubble Nebula on the sky, making the region a favorite for wide-field observing and imaging. Through binoculars the cluster appears as a compact haze; a telescope resolves it into a dense scatter of stars with a brighter, hooked central pattern.

The name “Scorpion Cluster” is a modern visual nickname rather than an ancient tradition. Several of M52’s brighter chains curve away from its center like the claws and hooked tail of a small celestial scorpion.

M52 lies within Cassiopeia, the legendary queen whose boast that she and her daughter Andromeda were more beautiful than the sea nymphs brought Poseidon’s anger upon her kingdom. In the familiar Greek story, Cassiopeia was placed among the stars as a warning against vanity.

No traditional Hawaiian name is known for M52 itself. From Hawaiʻi, Cassiopeia remains in the northern sky, and M52 reaches its best views when the constellation climbs highest during late summer and autumn evenings.