Cosmic particles from exploding stars way out in the galaxy trigger lightning. When these hit the atmosphere, they provide that spark.

宇宙粒子来自银河系外超新星爆发当它们袭击大气层时催生了闪电。

Can you believe there was a time when we would have needed an array of giant Cherenkov telescopes to detect cosmic particles? And here we are building our own multi-wire detector like a couple of badasses.

你能相信曾几何时，人类得靠着巨大的切伦科夫望远镜阵列来探测宇宙射线粒子吗？而如今我们自己就可以构建多线探测器，简直霸气到炸啊。