Comet Hale-Bopp, discovered in 1995 was an unusually bright comet.
1995年发现的海尔-波普彗星是一颗异常明亮的彗星。
When comet Hale-Bopp appeared in 1997, rumors surfaced that an alien spacecraft was following the comet - covered up, of course, by NASA and the astronomical community.
1997年，海尔—波普彗星出现的时候，有一种传言说有一艘外星人的飞船躲在该彗星的后面，当然了，这种谣言是从美国宇航局和天文学界传出来的。
Either way, Hale–Bopp managed to travel billions of kilometers before giving up its messy ways, farther than any comet astronomers have ever seen.
不管怎样，海尔波普彗星已为摆脱其邋遢的形象而游走了数十亿公里，这样的壮举比其它任何天文学家所观测过的彗星都要更胜一筹。
Detection of comet Hale-Bopp at 30.7 au.
海尔·波普彗星的运行方向，页30.7au一文。
A recent, highly visible comet was Hale-Bopp, which came within 122 million miles (197 million kilometers) of Earth in 1997.
最近出现的高亮度彗星是海尔·波普彗星(Hale - Bopp)，它在1997年到达距离地球1.22亿英里(1.97亿公里)的范围内。
Comet Hale-Bopp has been spotted beyond the orbit of Neptune, far enough from the sun to be without its dirty tail. John Matson reports.
海尔波普彗星在位于海王星轨道上方出现，因其与太阳之间距离足够远，所以并未出现脏尾。-约翰·迈特森报道。
The last comet to show prominent striae was comet Hale-Bopp in 1997.
上一次出现这种明显彗尾细纹的彗星是1997年的海尔·波普彗星。
Comet Hale -bopp has been spotted beyond the orbit of Neptune, far enough from the sun to be without its dirty tail. John Matson reports.
海尔·波普彗星在位于海王星轨道上方出现，因其与太阳之间距离足够远，所以并未出现脏尾。
Comet Hale -bopp has been spotted beyond the orbit of Neptune, far enough from the sun to be without its dirty tail. John Matson reports.
海尔·波普彗星在位于海王星轨道上方出现，因其与太阳之间距离足够远，所以并未出现脏尾。
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