the-yin-yang-cluster-ngc-659-open-cluster-ngc-559-and-barred-spiral-galaxy-ngc-672https://www.astronomy.com/observing/deep-sky-objects/page/32/Deep-Sky Objects | Page 32 of 49 | Astronomy.comDeep-sky objects are celestial objects that exist outside our solar system. Three major types of deep-sky objects are nebulae, star clusters, and galaxies.https://www.astronomy.com/uploads/2021/09/Triangulum.jpgInStockUSD1.001.00deep-sky-objectsgalaxiesarticleASY2023-05-182014-11-1346984
Deep-sky objects are celestial objects that exist outside our solar system. Three major types of deep-sky objects are nebulae, star clusters, and galaxies.