cometary

The cometary ejection play a crucial role in formation and evolution of the meteoroid stream.

彗星的喷发速度在流星群的演化过程中起着重要作用。

Originally I thought it would be a dud, since the Cassiniobservations comes back with a cometary origin composition of pristine, unprocessed organics in the jets.

原来我以为这会是一个哑弹，自从卡西尼观测彗星原始的起源组成归来，未加工的有机物在彗发里。