a-tale-of-two-marathonshttps://www.astronomy.com/observing/deep-sky-objects/page/45/Deep-Sky Objects | Page 45 of 47 | 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/wp-content/uploads/sites/2/2021/09/ChapleGlenn-2.jpg?fit=929%2C1195InStockUSD1.001.00deep-sky-objectsarticleASY2023-05-182012-01-2341975
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.