宇宙中的氘

太空中所有的重氫可能都是在“大爆炸”後的最初15分鐘內產生的。 因此,對其丰度的觀測和估算為了解當時的條件提供了證據。

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Jay M. Pasachoff is an astronomer at Williams College. He is chair of the Working Group on Solar Eclipses of the International Astronomical Union. His work is funded by the National Geographic Society and the National Science Foundation.

More by Jay M. Pasachoff
大眾科學 Magazine Vol 230 Issue 5This article was originally published with the title “Deuterium in the Universe” in 大眾科學 Magazine Vol. 230 No. 5 (), p. 108
doi:10.1038/scientificamerican0574-108
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