What are all the different types of nebula in astronomy? | by Ethan Siegel | Starts With A Bang! | Mar, 2025
This image shows six diff erent, unrelated planetary nebulae, all with similar, bipolar morphologies. These six objects, NGC 6302, NGC 6881, NGC 5189, M2–9, Hen 3–1475, and Hubble 5, are all destined to fade away after around 20,000 years. (Credit:...