NASA IDs 90 pct. of largest near-Earth asteroids (AP)

In this undated artist's rendition released Thursday Sept. 29,2011 by NASA/Jet Propulsion Laboratory, showing WISE, (Wide-field Infrared Survey Explorer), NASA on Thursday Sept. 29,2011 said its sky-mapping spacecraft called WISE has discovered 911 of 981 of the largest asteroids and has found more than 90 percent of the biggest asteroids that might pose a threat to Earth.  (AP Photo/NASA/JPL)AP - If you’re worried about a killer asteroid wiping out Earth, NASA has some good news.

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