The Hayabusa probe blazed a spectacular trail as it came in to hit the ground at a blistering speed, ending a journey to the near-Earth asteroid Itokawa that began in 2003.

这颗“隼鸟号”探测器拖着壮观的火焰尾迹以极快的速度到达地面，结束了一段2003年开始、以近地小行星“系川”为目标的旅程。

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Many scientists believe the Earth suffered a direct hit from an asteroid or that a comet could be to blame for the extinction.

许多科学家认为，地球遭受小行星或彗星的直接撞击可能是恐龙灭绝的原因。

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NASA has largely dismissed a Russian report that an asteroid larger than two football fields could hit Earth by 2036.

美国国家航空和宇宙航行局在很大程度否定了一份俄国的报告，该报告称一个比两个足球场还大的行星可能于2036年撞击地球。

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He confides to in hushed tones about the space rock, the inevitable asteroid that will hit the earth someday and obliterate life as we know it.

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Does NASA have an estimate of the probability that the Earth will be hit by a potentially hazardous object (such as an asteroid) in the next 100 years?

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