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Back Spiral Galaxy M81 - Southern Arm

Spiral Galaxy M81 - Southern Arm


Date: 28 May 2007
Satellite: Hubble Space Telescope
Depicts: Southern arm of M81
Copyright: NASA, ESA and the Hubble Heritage Team (STScI/AURA).
Acknowledgment: A. Zezas and J. Huchra (Harvard-Smithsonian Center for Astrophysics)

A string of star-forming regions show along a spiral arm in M81, their glowing hydrogen gas appears green in colour. A denser concentration of dust is visible along the arms.
Last Update: 1 September 2019
22-Jan-2026 20:23 UT

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