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FancyEnglish Asteroid Flyby 百科知识
November 7, 2011
(CNN Student News) -- November 7, 2011 Asteroid Flyby AZUZ: In addition to being the first asteroid discovered, Ceres is also one of the largest. It`s about as big across as Texas. Right now, astronomers are keeping their eyes on another asteroid. It`s about the size of an aircraft carrier, not as big as Ceres, but still pretty big. (BEGIN VIDEO CLIP) AZUZ (voice-over): It`s under watch, because it`s expected to fly by the Earth tomorrow, and pretty nearby, too, closer than the moon. You can see the path on this animation here. The asteroid`s been classified as a potentially hazardous object. But NASA says it isn`t really any kind of threat. It will give scientists the chance to study these objects up close, though. (END VIDEO CLIP)
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