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Explanation: Part of our Galaxy is exploding. Recent radio observations show new details of hot gas expanding rapidly from an energetic star-forming region in our Galactic disk out into our Galaxy's halo. The combined power of at least hundreds of supernovae is needed to drive this tremendous expansion. The resulting 1000 light-year mushroom cloud dwarfs any Earth-borne nuclear explosion, but is small compared to the 60,000 light-year diameter of our Milky Way's disk. The mushroom cloud is one of many similar plumes, and provides important clues to the origin and nature of the Milky Way's mysterious hot gas halo.
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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: HI - Milky Way
Publications with words: HI - Milky Way
See also:
- Galaxies in Space
- APOD: 2025 February 9 Á Milky Way over the Australian Pinnacles
- APOD: 2024 November 24 Á Journey to the Center of the Galaxy
- APOD: 2024 November 5 Á Milky Way over Easter Island
- APOD: 2024 August 4 Á Gaia: Here Comes the Sun
- APOD: 2024 July 29 Á Milky Way over Uluru
- APOD: 2024 May 29 Á Stairway to the Milky Way