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