Spiral galaxy M81
The black hole in the center of this galaxy is 70 million times as massive as the Sun, but it behaves exactly the same as much, much smaller black holes.
Courtesy X-ray: NASA/CXC/Wisconsin/D.Pooley & CfA/A.Zezas; Optical: NASA/ESA/CfA/A.Zezas; UV: NASA/JPL-Caltech/CfA/J.Huchra et al.; IR: NASA/JPL-Caltech/CfA.
This image is in the Public Domain.
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