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Explanation: What happens when a star runs out of nuclear fuel? The center condenses into a white dwarf while the outer atmospheric layers are expelled into space and appear as a planetary nebula. This particular planetary nebula, designated Shapley 1 after the famous astronomer Harlow Shapley, has a very apparent annular ring like structure. Although some of these nebula appear like planets on the sky (hence their name), they actually surround stars far outside our Solar System.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: annular - planetary nebula - Shapley 1
Publications with words: annular - planetary nebula - Shapley 1
See also:
- APOD: 2025 April 15 Б Planetary Nebula NGC 1514 from Webb
- Planetary Nebula Abell 7
- The Medusa Nebula
- Jones Emberson 1
- APOD: 2024 February 12 Б HFG1 & Abell 6: Planetary Nebulae
- APOD: 2023 December 24 Б NGC 2440: Cocoon of a New White Dwarf
- APOD: 2023 October 3 Б MyCn 18: The Engraved Hourglass Planetary Nebula