Astronomers believe that comets originate from the oort cloud which is located 5 , 000 to 100 , 000 astronomical units from the sun 天文学家相信彗星诞生于距离太阳五千至十万个天文单位的奥尔特云。
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There it causes havoc in the oort cloud , a huge region surrounding the solar system that contains billions of bits of cosmic rubble left over from the formation of planets 在那里，它引起了奥尔特云的浩劫，奥尔特云是一个巨大的围绕太阳系的区域，里面包含了数十亿从行星形成中分离出来的宇宙碎块。
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Matese studied 82 comets from the oort cloud and found common elements in the shape of their orbits that could only be explained if they had been influenced by the gravitational pull of an object several times the size of jupiter and existing about 25 , 000 times farther from the sun than the earth 马泰塞研究了来自奥尔特云的82颗彗星，发现在它们轨道的形状上有共同的因素，那只有在它们是被一个数倍大于木星的天体的引力作用所影响，且这个天体距太阳的距离比地球要远25 ， 0000倍的情况下才能解释。
