The top documents tagged [spectrum line shift]

1 Hydrogen in the Milky Way Hydrogen is the most abundant element in our galaxy. The 21-cm Line.

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Kai Zhang Yongtian Zhu Lei Wang Nanjing Institute of Astronomical Optics & Technology, National Astronomical observatories, CAS Feasibility Experiments.

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Kai Zhang Yongtian Zhu Lei Wang Nanjing Institute of Astronomical Optics & Technology,

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