大部分飞入内太阳系的彗星似乎都来自奥特云的外部区域——奥特云是自太阳系诞生以来剩余的冰尘与残骸形成的区域。
Most comets that fly into the inner solar system seem to come from the outer region of the Oort cloud - a region of icy dust and debris left over from the birth of the solar system.
在“星尘”任务之前的一种理论是全部彗星都是由这些前太阳系颗粒制造的，但早期的分析一个也没发现。
Prior to the Stardust mission there was a theory that the entire comet would be made of these pre-solar grains, but early analysis found none.
我们正在分析星尘号的彗星样品。
我们正在分析星尘号的彗星样品。
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