summer-observing-targets-for-small-telescopeshttps://www.astronomy.com/observing/deep-sky-objects/page/28/Deep-Sky Objects | Page 28 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/stardome330-1.gifInStockUSD1.001.00deep-sky-objectsarticleASY2023-05-182015-06-0144860
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.