宇宙からは、光や電磁波だけでなく、陽子や電子、ニュートリノなどのさまざまな種類の粒子も降ってきています。目に見えない宇宙線を霧箱という装置で視覚的に捕らえることができます。 The Earth is being struck by light and electromagnetic radiation from all over the universe. But there are other visitors arriving from outer space, too?protons, electrons, and neutrinos. We can’t see these cosmic rays with our eyes, but this cloud chamber lets us see their tracks as they shoot down to us.