The microscope can magnify the object 100 times in diameter.

这架显微镜能把物体的直径放大100倍。

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Dr Chatterjee therefore suggests that an object 40km in diameter hit the Earth off the coast of India and forced vast quantities of lava out of the Deccan Traps.

因此，查特基博士认为，一个直径40千米的物体在印度海岸撞击地球，造成德干地盾喷发大量熔岩。

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The real danger would come from an object more than a kilometer in diameter, which could kick up enough sediment to cause environmental damage and crop failures worldwide.

真正的危险来自于直径超过1公里的天体，它会造成大量的沉积物，来破坏环境以及导致全球粮食歉收。

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Brown's team, using the Hubble telescope, found the object's diameter to be just 70km bigger than Pluto's.

BBC: NEWS | Science/Nature | Astronomers name 'world of chaos'

Dr Chatterjee therefore suggests that an object 40km in diameter hit the Earth off the coast of India and forced vast quantities of lava out of the Deccan Traps.

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Its smaller diameter is also good news, since there is still one chance in 1800 that the object could slam into earth in 2182.

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