That was four years ago; and since then, further research published in peer-reviewed journals has, if anything, weakened the solar case - whether involving cosmic rays or not.

这还只是四年前的普遍认识。 最近，一些经同行审阅发表的文章进一步弱化了太阳活动的影响——宇宙射线甚至被排除在考虑因素之外。

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The heliosphere shields the solar system from 90 percent of energetic cosmic rays — high-speed charged particles that would otherwise bombard the planets and harm life.

日球层就像一个盾牌，挡住了90%高能宇宙射线。 宇宙射线由高速带电粒子组成，会轰击星球并伤害生物。

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Their prediction is based on levels of rare isotopes that accumulate in the Earth's crust when weak solar winds allow cosmic rays to penetrate the Earth's atmosphere.

他们的预测是基于积聚在地壳的罕见同位素的水平，轻微的太阳风使宇宙射线穿透地球的大气层。

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The spacecraft was similar to one that would carry humans, and scientists were interested in measuring galactic cosmic rays and solar energetic particles on the trip.

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When the sun is at its most active, which is when it is spotty, the solar wind is stronger and fewer cosmic rays penetrate.

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Conversely, when solar activity is less intense, more cosmic rays get through.

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