| record levels | 0.25 |
| bombard the earth | 0.67 |
| reach earth | 0.67 |
| hit the earth | 0.64 |
| hit the atmosphere | 0.62 |
| consist of proton | 0.62 |
| enter the earth’s atmos… | 0.60 |
| alter climate | 0.58 |
| crash into earth’s atmo… | 0.53 |
| travel through space | 0.53 |
| seed cloud | 0.51 |
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| cloud | 0.56 |
| mutation | 0.32 |
| damage | 0.20 |
| radiation sickness | 0.16 |
| energy | 0.55 |
| effect | 0.34 |
| a yin-yang relationship | 0.25 |
| sufficient energy | 0.16 |
| deflected by magnetic f… | 0.53 |
| produced | 0.53 |
| held at bay | 0.50 |
| charged | 0.50 |
| detected | 0.46 |
| discovered in 1912 | 0.46 |
| emitted by distant sour… | 0.42 |
| accelerated | 0.40 |
| stripped of their elect… | 0.38 |
| produced by supernovae | 0.36 |
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