polaris-a-trio-of-open-clusters-and-spiral-galaxy-ngc-908https://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/stardome330.gifInStockUSD1.001.00deep-sky-objectsgalaxiesstarsarticleASY2023-05-182014-11-2047002
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.