Massive Black Hole Stumps Researchers 
Estimated to be 10 billion solar masses and 12.7 billion years old
http://www.space.com/scienceastronomy/heavy_blazar_040628.html

Estimated to be 10 billion solar masses and 12.7 billion years old
http://www.space.com/scienceastronomy/heavy_blazar_040628.html