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Life, Unbounded

Black Hole Roundup

Spinning black hole (NASA)

Black holes, black holes, and more black holes. In the past few weeks I’ve been thinking, talking, and even dreaming about black holes (yes really, somnolent thoughts seem well suited to these fantastic objects). Mostly this has been an effect of my book Gravity’s Engines hitting the shelves, but it’s also because barely a day [...]

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Life, Unbounded

Black Holes to the Rescue

The birth of a galaxy. An overlay of the X-ray light (blue) and ultraviolet light (red) coming from a system 12 billion years ago (with thanks to Wil van Breugel and Ian Smail)

This post is the fourth in a series that accompanies the publication of my book ‘Gravity’s Engines: How Bubble-Blowing Black Holes Rule Galaxies, Stars, and Life in the Cosmos’ (Scientific American/FSG). Ten years ago the universe was in trouble. Or rather, our puny human theories about the nature of all the stars and galaxies in [...]

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Life, Unbounded

Black Holes are Everywhere

Holes are everywhere, if you look...

This post is the second in a series that accompanies the upcoming publication of my book ‘Gravity’s Engines: How Bubble-Blowing Black Holes Rule Galaxies, Stars, and Life in the Cosmos’ (Scientific American/FSG). Black holes, even the really hugely massive ones, are tiny – positively microscopic pinpricks scattered throughout the vastness of spacetime. Even the largest, [...]

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Life, Unbounded

Black Holes Are Coming!

The center of the Milky Way seen in 6cm radio emission. Our central supermassive black hole lurks in the spiral-ring like structure to the right.(Credit: VLA, Prof. K.Y. Lo, University of Illinois, Urbana-Champaign, Dept. of Astronomy)

On August 14th 2012 my new book, Gravity’s Engines, will launch. I’m enormously excited about this, and over the next couple of months – increasingly so as publication date approaches, Life, Unbounded will carry some posts that talk about the science between the covers. The subject matter of Gravity’s Engines may appear a little surprising [...]

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Observations

Quasars at 50: Luminous Cosmic Beacons Remain a Puzzle

Quasar 3C 273 with jet

Fifty years ago, in the journal Nature, astronomer Maarten Schmidt published a brief paper noting that a star-like object known as 3C 273 was simply too far away to be a star in the Milky Way. Schmidt, of the California Institute of Technology, concluded on the basis of spectroscopic observations that the object was most [...]

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