near the Andromeda galaxy (M31)
14,000 to 23,000 times the mass of the Sun
52,000-86,000 miles (84,000-138,000 km), roughly equivalent to the diameter of Jupiter
Animation takes you into the heart of G1 to view its central black hole. [NASA/G. Bacon (STScI)]
This document was last modified: January 19, 2006.