在拂晓之前，英仙座流星雨的辐射点—英仙座将上升至我们头顶的天空的顶端。
Before dawn, Perseus - radiant point of the Perseid meteor shower - is close to overhead.
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.
因此，当地球靠近这段轨道时，从辐射点落下的碎片就形成了英仙座流星雨。
Therefore, when Earth crosses this orbit, the radiant point of falling debris appears in Perseus.
应用推荐