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NASA spacecraft spots multiplanet solar system

NASA's Kepler spacecraft, hunting for distant worlds by measuring the slight dimming of starlight as planets pass in front of their parent suns, has found its first multiplanet solar system, researchers announced Thursday.
The Kepler-9 system includes two Saturn-class worlds orbiting in gravitational lockstep close to their star and a possible third planet just a bit larger than Earth that whirls through a hellish "year" in just 1.8 days.

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