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Physics, 27.07.2022 05:10 Treshard

What would be the wavelength of the 21-cm-line if it was coming from a distance of 8,000,000,000 (8*10^9) light-years

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What would be the wavelength of the 21-cm-line if it was coming from a distance of 8,000,000,000 (8*...
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