由于宇宙射线（来自太空的高能带电粒子）和土星冰冷的光环之间进行相互作用，土星上产生的反质子数量可能最多。
Saturn may produce the greatest number of antiprotons because of interactions between cosmic rays—energetic charged particles from space—and the planet's icy rings.
宇宙射线撞击大气时，也会直接产生成对的质子和反质子。
Pairs of protons and antiprotons are also directly produced in the cosmic ray collisions with the atmosphere.
2006年，这些天体物理学家发射了一艘人造卫星，命名为PAMELA，进入低地球轨道，专为寻找宇宙射线中的反质子。
In 2006, these guys launched a spacecraft called PAMELA into low Earth orbit, specifically to look for antiprotons in cosmic rays.
这些宇宙射线的主要成分是质子。
These cosmic rays, as they are called, consist mostly of protons.
由于宇宙射线（来自太空的高能带电粒子）和土星冰冷的光环之间进行相互作用，土星上产生的反质子数量可能最多。
The number of antiprotons needed, however, would exceed the amount in the newly discovered belt or even the much larger belt that may circle Saturn, Bickford says.
由于宇宙射线（来自太空的高能带电粒子）和土星冰冷的光环之间进行相互作用，土星上产生的反质子数量可能最多。
The number of antiprotons needed, however, would exceed the amount in the newly discovered belt or even the much larger belt that may circle Saturn, Bickford says.
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