The Guardian - December 5, 2011
Astronomers have located the two biggest black holes ever found, each one billions of times more massive than our sun. Observations of these supermassive cosmic objects will give scientists clues on how black holes and galaxies formed and evolved, especially in the earliest stages of the universe's existence.
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These two newly discovered supermassive black holes were found by analysing data from the Hubble Space Telescope and two of the biggest ground-based telescopes in the world, the Gemini North and Keck 2 facilities in Hawaii. The work, led by Douglas O Richstone of the department of astronomy at the University of Michigan, Ann Arbor, is published this week in Nature.
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