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 |  | Astronomy November 2007
COVER STORY
The secret lives of black holes
A black hole's spin may power gamma-ray bursts and galactic jets. But its rotation has been hard to measure - until now. STEVE NADIS
Earth of the outer solar system
Each Cassini flyby of Titan fills in the details of this frostbitten saturnian moon shaped by forces identical to those that sculpted Earth's surface. MICHAEL CARROLL
The priest, the universe, and the Big Bang
A Belgian priest's extraordinary insights anticipated modern cosmology's most fundamental ideas. YAëL NAZé
Illustrated: Making sense of galaxies
Astronomers' efforts to explain galaxy types brought them from a tuning fork to a lemon. FRANCIS REDDY; ILLUSTRATION BY KELLIE JAEGER
How to observe variable stars
If your observing list doesn't contain variable stars, here's an easy guide to some of the finest. MICHAEL E. BAKICH
Who will save us from a killer asteroid?
Meet astronomers on the front lines of protecting Earth. ROBERT REEVES
Astrolight reflectors offer quality optics
Parks Optical's 6- and 8-inch Newtonian reflectors deliver top-notch optics at a reasonable price. PHIL HARRINGTON
Is LASIK for you?
Like any surgery, laser vision correction has pros and cons - especially for observers. DANIEL PENDICK
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