cometary

基本解释

Energetic light from this star is eating away the dust of the dark cometary globule at the top right the image.
從這顆恒星發出的高能光線正把途中右上角的黯淡的彗星似的小球躰中的塵埃消滅掉。
Moon rocks show that lunar water has more heavy hydrogen than does terrestrial water, indicating a cometary origin.
研究表明，月球巖石中的水資源比地球水資源包含更多的重氫元素，意即月球水有可能來源於彗星。
Moon rocks show that lunar water has more heavy hydrogen than does terrestrial water, indicating a cometary origin. Christopher Intagliata reports The Apollo moon missions ended almost 40 years ago.
研究表明，月球巖石中的水資源比地球水資源包含更多的重氫元素，意即月球水有可能來源於彗星。

There might be even more: the measurements probe only the top half-metre of regolith, but it is thought that cometary bombardment could have left ice in the top two metres.
ECONOMIST: At least lunar gold-diggers will be able to take a shower