1995年发现的海尔-波普彗星是一颗异常明亮的彗星。
Comet Hale-Bopp, discovered in 1995 was an unusually bright comet.
海尔·波普彗星的运行方向，页30.7 au一文。
数据显示月球水比地球水包含更多的重氢元素，并与海尔·波普彗星、百武彗星及哈雷彗星更为接近。
They found deuterium at higher levels than it's found in Earth water-but at levels similar to the comets Hale-Bopp, Hyakutake and Halley.
应用推荐