Sagittarius star cloud

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Sagittarius star cloud

[‚saj·ə′ter·ē·əs ′stär ‚klau̇d]
(astronomy)
A large star cloud within the Milky Way; its extension is about 1500 to 6000 light-years (1.42 × 1019 to 5.68 × 1019 meters) from the sun.