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Open Star Cluster NGC 1755
Science & Technology

Hubble Space Telescope Captures a Gorgeous Sprinkling of Stars

Hubble Space Telescope picture of the open star cluster NGC 1755. Credit score: ESA/Hubble & NASA, A. Milone, G. Gilmore

The open star cluster NGC 1755 resembles a pinch of salt strewn on a jet-black tablecloth on this picture from the NASA/ESA Hubble Space Telescope. This assortment of stars resides in a single the Milky Method’s close to neighbors — the Massive Magellanic Cloud — and measures 120 light-years backward and forward. Regardless of this spectacular breadth, NGC 1755 is a member of the smaller class of star clusters. Star clusters are gravitationally sure collections of stars, and are available in two predominant varieties — smaller open clusters like NGC 1755, that are hosts to youthful stars, and gargantuan globular clusters, which might comprise tens of millions of older stars.

Hubble gazed into the guts of NGC 1755 with a purpose to higher perceive how completely different populations of stars can co-exist in a single cluster. A inhabitants of stars is a group of stars with related properties akin to age or chemical composition, and these populations present astronomers with invaluable insights into the births, lives, and deaths of stars. Clusters within the Magellanic Clouds are significantly helpful pure laboratories due to the Clouds’ proximity to the Milky Method. Hubble’s eagle-eyed imaginative and prescient was a very important asset when observing NGC 1755 — with so many stars packed into a small space of sky, Hubble’s high-resolution Superior Digital camera for Surveys and Broad Discipline Digital camera 3 allowed particular person stars within the cluster to be distinguished.

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