Los Angeles Times - December 6, 2011
Astrophysicists scanning the heavens have clocked a new cosmological record: the two biggest black holes ever detected — one about 10 billion times the mass of our sun and the second as much as twice the size of the first.
...
Using the Gemini North and Keck II telescopes in Hawaii, the McDonald Observatory in Texas and the Earth-orbiting Hubble Space Telescope, the scientists did more than luck out — they found that the stars and gas near the centers of the two far-off galaxies were moving much faster than they had anticipated.
...