orions-belt-open-cluster-m35-and-the-christmas-tree-cluster-ngc-2264https://www.astronomy.com/observing/deep-sky-objects/page/45/Deep-Sky Objects | Page 45 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-objectsobservingarticleASY2023-05-182012-12-2741526
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.