SCIENCE
Roland, James

Black Holes

(3) 4-6 Space Discovery Guides series. Black holes, gravitational waves, space-time and relativity, and modern technologies that help scientists develop theories about the makeup of the universe are covered in this book. Helpful diagrams and photographs of detectors and scientists at work accompany the clear text. This is pretty advanced astrophysics, but it's excellently described at the appropriate level for upper-elementary space enthusiasts. Reading list, websites. Bib., glos., ind.

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