Article: NASA launches gamma ray hunter

CAPE CANAVERAL, Fla. - The fastest-swiveling space science observatory ever built rocketed into orbit Saturday to scan the universe for violent celestial explosions that astronomers believe represent the birth screams of black holes.

NASA launched the observatory - named Swift for its speedy pivoting and pointing - following weeks of delays caused by hurricanes and a three-day postponement because of rocket trouble. The rocket climbed smoothly through a cloud-flecked sky, and ...

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