Conversely, when solar activity is less intense, more cosmic rays get through.
Conversely, when solar activity is less intense, more cosmic rays get through.
一项研究发现，当宇宙射线最弱和最强时，地球上空为云层所覆盖的区域比例分别是65%和68%。
Conversely, when solar activity is less intense, more cosmic rays get through.
一项研究发现，当宇宙射线最弱和最强时，地球上空为云层所覆盖的区域比例分别是65%和68%。