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Death Star
Companion site to a Public Broadcasting Service (PBS) NOVA program that "probes the deep mysteries of gamma-ray bursts, the most powerful celestial explosions since the big bang." Features articles from astrophysicists, an interactive tour of the electromagnetic spectrum, and information about other extraterrestrial wonders such as "pulsars and quasars, antimatter and dark matter, [and] brown dwarfs and white dwarfs." Includes a teacher's guide and related resources.
http://www.pbs.org/wgbh/nova/gamma/
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