一种放射性超铀元素在用氦核子轰击时发现。
A radioactive transuranic metallic element produced by bombarding with helium nuclei.
而随着宇宙的进一步冷却，这些质子与中子便有能力团聚一起并组成质量最小元素中的核子，这些元素即氢、氦与锂。
When it had cooled further, these protons and neutrons were able to get together to form the nuclei of the lightest elements-hydrogen, helium and lithium.
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