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Starved of fuel, the black hole slows growth. The work, published in , explains why we don't detect supermassive black holes more than ten billion solar masses today.

Finally a comparison of factual and fictional information about black holes is presented.

Robert N. Proctor is Professor of the History of Science at Stanford University and the author of (1999) and (1995). Londa Schiebinger is the John L. Hinds Professor of History of Science and the Barbara D. Finberg Director of the Clayman Institute for Gender Research at Stanford University. Her recent books include (2004) and (forthcoming from Stanford).

—Sheila Jasanoff, Harvard University

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The energy injection needed to accelerate the Bullet to this speed is more than their supernova shell could impart. So, the researchers figured, there must be something else going on.

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But it's tiny to some of the monsters we've detected. Some are in the tens of billions of solar masses. But that's as massive as they seem to get. Why is this?

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The pair's upper limit size calculations support another study published in the by the UK's University of Leicester's Andrew King in December last year, which attributed slowed growth to fragmentation of the disc.

Physics and Astronomy at Siena College Siena College New York

Astronomers have spotted an enormous fast-moving black hole that is likely the product of the collision of two smaller but still enormous black holes.