狮子座流星群的得名是由于它们流星辐射点位于狮子座。根据你所处的地理位置，狮子座一般会在凌晨1点到3点左右出现在地平线上的东北方向。
The Leonids are so named because they seem to radiate from the constellation Leo, the lion, which rises above the northeastern horizon between 1 a.m. and 3 a.m., depending on your location.
你有没有发现当辐射点远高于地平线时你可以观察到更多的流星？
Can you see that you'll observe more meteors when the radiant point is well above the horizon?
每年的流星雨主要来自彗星，而辐射点就是与彗星轨道相交的那个点，就好像列车轨道在远处聚合的那点一样。
Meteors in annual showers stem from comets, and the radiant point is the point in the sky where we cross the comet's orbit. It's kind of like the point in the distance where train tracks converge.
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